Removed shadow on app bar

Author: Corewala

app/src/main/res/layout/activity_gem.xml

@@ -17,7 +17,9 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="@color/header_background"
-        android:fitsSystemWindows="true">
+        android:fitsSystemWindows="true"
+        android:elevation="0dp"
+        app:elevation="0dp">
 
         <com.google.android.material.appbar.CollapsingToolbarLayout
             android:id="@+id/toolbar_layout"