HardwareService: cleanup

Change-Id: Ic33246486c53ac9c92c6191f36e9d17a562fc7ec
diff --git a/ring-android/app/src/main/java/cx/ring/services/HardwareServiceImpl.java b/ring-android/app/src/main/java/cx/ring/services/HardwareServiceImpl.java
index 03c53e8..9467596 100644
--- a/ring-android/app/src/main/java/cx/ring/services/HardwareServiceImpl.java
+++ b/ring-android/app/src/main/java/cx/ring/services/HardwareServiceImpl.java
@@ -33,7 +33,6 @@
 
 import androidx.annotation.Nullable;
 
-import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.WindowManager;