gitc_utils: Remove unused variable

Change-Id: I569819675a99ff6c01fb57b23fed033c39d14d1f
diff --git a/gitc_utils.py b/gitc_utils.py
index 4a9a879..0dce93b 100644
--- a/gitc_utils.py
+++ b/gitc_utils.py
@@ -58,7 +58,6 @@
   """
   print('Generating GITC Manifest by fetching revision SHAs for each '
         'project.')
-  project_gitcmd_dict = {}
   index = 0
   while index < len(manifest.projects):
     _set_project_revisions(