Refactoring pt. 2

More boilerplate removed.
diff --git a/requirements.txt b/requirements.txt
index 66f0f4b..5b3aadd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 pyparsing
 pyyaml
-pygit2
 six
+enum34