Initial cleanup of unused old dialer code

Removed unused classes and renamed NewDialpadFragment to DialpadFragment.
Removed some unused static imports

Change-Id: If16a8bfe8cc113a570514b6d0edd87cb946758fa
diff --git a/src/com/android/dialer/DialerBackupAgent.java b/src/com/android/dialer/DialerBackupAgent.java
index cbcdf5b..928be02 100644
--- a/src/com/android/dialer/DialerBackupAgent.java
+++ b/src/com/android/dialer/DialerBackupAgent.java
@@ -33,6 +33,6 @@
     @Override
     public void onCreate() {
         addHelper(SHARED_KEY, new SharedPreferencesBackupHelper(this,
-               OldDialtactsActivity.SHARED_PREFS_NAME));
+                DialtactsActivity.SHARED_PREFS_NAME));
     }
 }