Back out "Add tests for DisplayMetricsHolder" (facebook#53148)

Summary:
Pull Request resolved: facebook#53148

Reverting D78981753 because it's causing tests to OOM
facebook@384677f

changelog: [internal] internal

Reviewed By: shwanton

Differential Revision: D79828375

fbshipit-source-id: 3de01dca3d9a9fc4530c84855049eb4ec132a485

Author: mdvacca

packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/DisplayMetricsHolder.kt

@@ -168,6 +168,6 @@ public object DisplayMetricsHolder {
         (checkNotNull(screenDisplayMetrics).heightPixels - verticalInsets).toFloat().pxToDp())
   }
 
-  internal fun encodeFloatsToLong(width: Float, height: Float): Long =
+  private fun encodeFloatsToLong(width: Float, height: Float): Long =
       (width.toRawBits().toLong()) shl 32 or (height.toRawBits().toLong())
 }