Remove redundant build number (#516)

Author: papeye

packages/leancode_analytics_firebase/pubspec.yaml

@@ -1,6 +1,6 @@
 name: leancode_analytics_firebase
 description: Firebase Analytics implementation for LeanCode analytics.
-version: 0.1.1+2
+version: 0.1.1
 homepage: https://github.com/leancodepl/flutter_corelibrary/tree/master/packages/leancode_analytics_firebase
 repository: https://github.com/leancodepl/flutter_corelibrary