remove unused dependencies and compress native libraries

app/build.gradle

@@ -45,14 +45,19 @@ android {
         noCompress 'main.dict'
         noCompress 'empty.dict'
     }
+
+    packagingOptions {
+        jniLibs {
+            // shrinks APK by 3 MB, zipped size unchanged
+            useLegacyPackaging true
+        }
+    }
 }
 
 dependencies {
     implementation 'com.google.code.findbugs:jsr305:3.0.2'
-    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'androidx.recyclerview:recyclerview:1.3.1'
-    implementation 'androidx.recyclerview:recyclerview:1.3.0' // Replaces recyclerview:1.0.0 included by above dependency
     implementation 'androidx.core:core-ktx:1.10.1'
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.viewpager2:viewpager2:1.0.0'
     testImplementation 'junit:junit:4.13.2'
 }

app/src/main/AndroidManifest.xml

@@ -47,8 +47,7 @@
             android:supportsRtl="true"
             android:allowBackup="true"
             android:defaultToDeviceProtectedStorage="true"
-            android:directBootAware="true"
+            android:directBootAware="true">
-            android:extractNativeLibs="false">
 
         <!-- Services -->
         <service android:name="LatinIME"

gradle.properties

@@ -1,3 +1,2 @@
-android.enableJetifier=true
 android.useAndroidX=true
 org.gradle.jvmargs=-Xmx1024m