Removes unused dependencies and jobs

- Removing unused dependencies from requirements & test-requirements.
- Removing pypy job from tox.

Change-Id: Ibac174650ceba17e293a49534861b8840c6b3d64

requirements.txt

@@ -3,4 +3,3 @@
 # process, which may cause wedges in the gate later.
 
 pbr<2.0,>=1.4
-libvirt-python

test-requirements.txt

@@ -1,16 +1,11 @@
 # The order of packages is significant, because pip processes them in the order
 # of appreance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
-hacking<0.11,>=0.10.0
 
-coverage>=3.6
-python-subunit>=0.0.18
+# Dependencies for generating documentation.
 sphinx>=1.2.1,!=1.3b1,<1.4  # BSD
 sphinx-testing # BSD License
 oslosphinx>=4.7.0
-oslotest>=1.10.0
-testrepository>=0.0.18
-testscenarios>=0.4
-testtools>=1.4.0
 
+# For linting/profiling the code.
 bashate # pep8 equivalent for bash scripts

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 1.6
-envlist = pypy,pep8,bash8
+envlist = pep8,bash8
 skipsdist = True
 
 [testenv]