Don't install pep8 from packages

We have migrated to flake8 and most distros don't have the version of
pep8 that flake8 (and hacking) use.  Instead of installing pep8 from
packages it should be installed from pip

Change-Id: I86e4f8316f3cdc27303bfd039a78c0d6202ce321

files/apts/general

@@ -1,5 +1,4 @@
 bridge-utils
-pep8
 pylint
 python-pip
 screen

files/apts/horizon

@@ -11,7 +11,6 @@ python-sqlalchemy
 python-webob
 python-kombu
 pylint
-pep8
 python-eventlet
 python-nose
 python-sphinx

files/rpms-suse/general

@@ -8,7 +8,6 @@ openssl
 psmisc
 python-cmd2 # dist:opensuse-12.3
 python-netaddr
-python-pep8
 python-pip
 python-pylint
 python-unittest2

files/rpms-suse/horizon

@@ -17,7 +17,6 @@ python-kombu
 python-mox
 python-netaddr
 python-nose
-python-pep8
 python-pylint
 python-sqlalchemy-migrate
 python-xattr

files/rpms/general

@@ -11,7 +11,6 @@ libxslt-devel # dist:rhel6 [2]
 psmisc
 pylint
 python-netaddr
-python-pep8
 python-pip
 python-prettytable # dist:rhel6 [1]
 python-unittest2
@@ -29,4 +28,4 @@ wget
 
 # [2] : RHEL6 rpm versions of python-lxml is old, and has to be
 # removed.  Several tools rely on it, so we install the dependencies
-# pip needs to build it here (see tools/install_prereqs.sh)
+# pip needs to build it here (see tools/install_prereqs.sh)

files/rpms/horizon

@@ -20,7 +20,6 @@ python-netaddr
 python-nose
 python-paste        #dist:f16,f17,f18
 python-paste-deploy #dist:f16,f17,f18
-python-pep8
 python-routes
 python-sphinx
 python-sqlalchemy