chore: remove items from .gitignore

Author: davidabou

.gitignore

@@ -1,12 +1,7 @@
 # Dependencies
 node_modules
-jspm_packages
 
 package-lock.json
-packages/*/README.md
-!packages/harmonix/README.md
-packages/*/LICENSE
-*/**/yarn.lock
 /.yarn
 
 # Logs
@@ -19,14 +14,8 @@ packages/*/LICENSE
 
 # Generated dirs
 dist
-.harmonix
-.harmonix-*
 .output
 .output-*
-.gen
-
-# Junit reports
-reports
 
 # Coverage reports
 coverage