Remove src/ui folder, moved to:

https://github.com/GrammaticalFramework/gf-offline-translator

.gitignore

@@ -39,8 +39,6 @@ src/runtime/c/sg/.dirstamp
 src/runtime/c/stamp-h1
 src/runtime/java/.libs/
 src/runtime/python/build/
-src/ui/android/libs/
-src/ui/android/obj/
 .cabal-sandbox
 cabal.sandbox.config
 .stack-work