Clean up additional INSTALL_TESTONLY_PACKAGES bits

The original removal is in https://review.openstack.org/#/c/167669/

Change-Id: I3c59f040523d2cd1453465e80280955218880634

doc/source/configuration.rst

@@ -417,18 +417,6 @@ IP Version
       can be configured with any valid IPv6 prefix. The default values make
       use of an auto-generated ``IPV6_GLOBAL_ID`` to comply with RFC 4193.*
 
-Unit tests dependencies install
--------------------------------
-
-    | *Default: ``INSTALL_TESTONLY_PACKAGES=False``*
-    |  In order to be able to run unit tests with script ``run_test.sh``,
-       the required package dependencies need to be installed.
-       Setting this option as below does the work.
-
-    ::
-
-        INSTALL_TESTONLY_PACKAGES=True
-
 Examples
 ========
 

functions-common

@@ -909,8 +909,6 @@ function get_packages {
     local file_to_parse=""
     local service=""
 
-    INSTALL_TESTONLY_PACKAGES=$(trueorfalse False INSTALL_TESTONLY_PACKAGES)
-
     if [[ -z "$package_dir" ]]; then
         echo "No package directory supplied"
         return 1

inc/python

@@ -53,7 +53,7 @@ function get_python_exec_prefix {
 }
 
 # Wrapper for ``pip install`` to set cache and proxy environment variables
-# Uses globals ``INSTALL_TESTONLY_PACKAGES``, ``OFFLINE``, ``PIP_VIRTUAL_ENV``,
+# Uses globals ``OFFLINE``, ``PIP_VIRTUAL_ENV``,
 # ``PIP_UPGRADE``, ``TRACK_DEPENDS``, ``*_proxy``
 # pip_install package [package ...]
 function pip_install {