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
diff --git a/files/rpms/general b/files/rpms/general
index 764b602..d6abae9 100644
--- a/files/rpms/general
+++ b/files/rpms/general
@@ -11,7 +11,6 @@
 psmisc
 pylint
 python-netaddr
-python-pep8
 python-pip
 python-prettytable # dist:rhel6 [1]
 python-unittest2
@@ -29,4 +28,4 @@
 
 # [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)
\ No newline at end of file
+# pip needs to build it here (see tools/install_prereqs.sh)
diff --git a/files/rpms/horizon b/files/rpms/horizon
index cf16cdb..e27888a 100644
--- a/files/rpms/horizon
+++ b/files/rpms/horizon
@@ -20,7 +20,6 @@
 python-nose
 python-paste        #dist:f16,f17,f18
 python-paste-deploy #dist:f16,f17,f18
-python-pep8
 python-routes
 python-sphinx
 python-sqlalchemy