ignore .idea/deploymentTargetDropDown

.gitignore

@@ -8,12 +8,11 @@
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
 /.idea/androidTestResultsUserPreferences.xml
+/.ida/deploymentTargetDropDown.xml
 .DS_Store
 /build
 /captures
-.externalNativeBuild
 .cxx
-local.properties
 
 
 # Built application files
@@ -55,7 +54,6 @@ proguard/
 captures/
 
 # IntelliJ
-*.iml
 .idea/workspace.xml
 .idea/tasks.xml
 .idea/gradle.xml