android: Remove unused fragment animations

src/android/app/src/main/res/animator/menu_slide_in_from_end.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<set xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <objectAnimator
-        android:propertyName="translationX"
-        android:valueType="floatType"
-        android:valueFrom="1280dp"
-        android:valueTo="0"
-        android:interpolator="@android:interpolator/decelerate_quad"
-        android:duration="300"/>
-
-    <objectAnimator
-        android:propertyName="alpha"
-        android:valueType="floatType"
-        android:valueFrom="0"
-        android:valueTo="1"
-        android:interpolator="@android:interpolator/accelerate_quad"
-        android:duration="300"/>
-
-</set>

src/android/app/src/main/res/animator/menu_slide_out_to_end.xml

@@ -1,21 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<set xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <!-- This animation is used ONLY when a submenu is replaced. -->
-    <objectAnimator
-        android:propertyName="translationX"
-        android:valueType="floatType"
-        android:valueFrom="0"
-        android:valueTo="1280dp"
-        android:interpolator="@android:interpolator/decelerate_quad"
-        android:duration="200"/>
-
-    <objectAnimator
-        android:propertyName="alpha"
-        android:valueType="floatType"
-        android:valueFrom="1"
-        android:valueTo="0"
-        android:interpolator="@android:interpolator/decelerate_quad"
-        android:duration="200"/>
-
-</set>