Remove utils.deprecated functions.

We don't seem to use utils.deprecated at all... so lets
remove it and save ourselves 200 lines of code.

Also moves a couple misc. test cases in utils.py out of the
DeprecationTest suite and into the GenericUtilsTestCase
suite.

Change-Id: I03f71f2ee06a526a8902a3079257afd6fd65dc59

nova/utils.py

@@ -39,7 +39,6 @@ import threading
 import time
 import types
 import uuid
-import warnings
 from xml.sax import saxutils
 
 from eventlet import corolocal
@@ -1238,173 +1237,6 @@ def temporary_mutation(obj, **kwargs):
                 setattr(obj, attr, old_value)
 
 
-def warn_deprecated_class(cls, msg):
-    """
-    Issues a warning to indicate that the given class is deprecated.
-    If a message is given, it is appended to the deprecation warning.
-    """
-
-    fullname = '%s.%s' % (cls.__module__, cls.__name__)
-    if msg:
-        fullmsg = _("Class %(fullname)s is deprecated: %(msg)s")
-    else:
-        fullmsg = _("Class %(fullname)s is deprecated")
-
-    # Issue the warning
-    warnings.warn(fullmsg % locals(), DeprecationWarning, stacklevel=3)
-
-
-def warn_deprecated_function(func, msg):
-    """
-    Issues a warning to indicate that the given function is
-    deprecated.  If a message is given, it is appended to the
-    deprecation warning.
-    """
-
-    name = func.__name__
-
-    # Find the function's definition
-    sourcefile = inspect.getsourcefile(func)
-
-    # Find the line number, if possible
-    if inspect.ismethod(func):
-        code = func.im_func.func_code
-    else:
-        code = func.func_code
-    lineno = getattr(code, 'co_firstlineno', None)
-
-    if lineno is None:
-        location = sourcefile
-    else:
-        location = "%s:%d" % (sourcefile, lineno)
-
-    # Build up the message
-    if msg:
-        fullmsg = _("Function %(name)s in %(location)s is deprecated: %(msg)s")
-    else:
-        fullmsg = _("Function %(name)s in %(location)s is deprecated")
-
-    # Issue the warning
-    warnings.warn(fullmsg % locals(), DeprecationWarning, stacklevel=3)
-
-
-def _stubout(klass, message):
-    """
-    Scans a class and generates wrapping stubs for __new__() and every
-    class and static method.  Returns a dictionary which can be passed
-    to type() to generate a wrapping class.
-    """
-
-    overrides = {}
-
-    def makestub_class(name, func):
-        """
-        Create a stub for wrapping class methods.
-        """
-
-        def stub(cls, *args, **kwargs):
-            warn_deprecated_class(klass, message)
-            return func(*args, **kwargs)
-
-        # Overwrite the stub's name
-        stub.__name__ = name
-        stub.func_name = name
-
-        return classmethod(stub)
-
-    def makestub_static(name, func):
-        """
-        Create a stub for wrapping static methods.
-        """
-
-        def stub(*args, **kwargs):
-            warn_deprecated_class(klass, message)
-            return func(*args, **kwargs)
-
-        # Overwrite the stub's name
-        stub.__name__ = name
-        stub.func_name = name
-
-        return staticmethod(stub)
-
-    for name, kind, _klass, _obj in inspect.classify_class_attrs(klass):
-        # We're only interested in __new__(), class methods, and
-        # static methods...
-        if (name != '__new__' and
-            kind not in ('class method', 'static method')):
-            continue
-
-        # Get the function...
-        func = getattr(klass, name)
-
-        # Override it in the class
-        if kind == 'class method':
-            stub = makestub_class(name, func)
-        elif kind == 'static method' or name == '__new__':
-            stub = makestub_static(name, func)
-
-        # Save it in the overrides dictionary...
-        overrides[name] = stub
-
-    # Apply the overrides
-    for name, stub in overrides.items():
-        setattr(klass, name, stub)
-
-
-def deprecated(message=''):
-    """
-    Marks a function, class, or method as being deprecated.  For
-    functions and methods, emits a warning each time the function or
-    method is called.  For classes, generates a new subclass which
-    will emit a warning each time the class is instantiated, or each
-    time any class or static method is called.
-
-    If a message is passed to the decorator, that message will be
-    appended to the emitted warning.  This may be used to suggest an
-    alternate way of achieving the desired effect, or to explain why
-    the function, class, or method is deprecated.
-    """
-
-    def decorator(f_or_c):
-        # Make sure we can deprecate it...
-        if not callable(f_or_c) or isinstance(f_or_c, types.ClassType):
-            warnings.warn("Cannot mark object %r as deprecated" % f_or_c,
-                          DeprecationWarning, stacklevel=2)
-            return f_or_c
-
-        # If we're deprecating a class, create a subclass of it and
-        # stub out all the class and static methods
-        if inspect.isclass(f_or_c):
-            klass = f_or_c
-            _stubout(klass, message)
-            return klass
-
-        # OK, it's a function; use a traditional wrapper...
-        func = f_or_c
-
-        @functools.wraps(func)
-        def wrapper(*args, **kwargs):
-            warn_deprecated_function(func, message)
-
-            return func(*args, **kwargs)
-
-        return wrapper
-    return decorator
-
-
-def _showwarning(message, category, filename, lineno, file=None, line=None):
-    """
-    Redirect warnings into logging.
-    """
-
-    fmtmsg = warnings.formatwarning(message, category, filename, lineno, line)
-    LOG.warning(fmtmsg)
-
-
-# Install our warnings handler
-warnings.showwarning = _showwarning
-
-
 def service_is_up(service):
     """Check whether a service is up based on last heartbeat."""
     last_heartbeat = service['updated_at'] or service['created_at']