updated git ignore

Author: Salvatore Ranieri

.gitignore

@@ -1,13 +1,3 @@
-# Built application files
-*.apk
-*.ap_
-
-# Files for the ART/Dalvik VM
-*.dex
-
-# Java class files
-*.class
-
 # Generated files
 bin/
 gen/
@@ -34,17 +24,4 @@ captures/
 
 # Intellij
 *.iml
-.idea/
-# Keystore files
-*.jks
-
-# External native build folder generated in Android Studio 2.2 and later
-.externalNativeBuild
-
-# Google Services (e.g. APIs or Firebase)
-google-services.json
-
-# Freeline
-freeline.py
-freeline/
-freeline_project_description.json
+.idea/