Unify and deduplicate gitignores

.gitignore

@@ -45,3 +45,6 @@ out
 # Imported libs
 extern/*/libs/
 extern/*/*/libs/
+
+# Tests
+junit-report.xml

F-Droid-Privileged/.gitignore

@@ -1,33 +0,0 @@
-#Android specific
-bin
-gen
-obj
-lint.xml
-local.properties
-release.properties
-ant.properties
-*.class
-*.apk
-
-#Gradle
-.gradle
-build
-gradle.properties
-
-#Maven
-target
-pom.xml.*
-
-#Eclipse
-.project
-.classpath
-.settings
-.metadata
-
-#IntelliJ IDEA
-.idea
-*.iml
-
-#Lint output
-lint-report.html
-lint-report_files/*

F-Droid/test/.gitignore

@@ -1,12 +0,0 @@
-/local.properties
-/bin/
-/gen/
-/build/
-/.gradle/
-/build.xml
-*~
-/.idea/
-/*.iml
-out
-/.settings/
-junit-report.xml