Revert "refactor radioPowerState"

This reverts commit 753ec8dfae3ab20ef871ee2698560890db5c247a.

Reason for revert: Broken master build

Change-Id: I1de997fbb3e2e54c693b6e9f2cf0acc67bc0d47c
diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 37090ba..f2bc7d3 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -4934,31 +4934,6 @@
     }
 
     /**
-     * Get the current modem radio state for the given slot.
-     * @param slotIndex slot index.
-     * @param callingPackage the name of the package making the call.
-     * @return the current radio power state from the modem
-     */
-    @Override
-    public int getRadioPowerState(int slotIndex, String callingPackage) {
-        Phone phone = PhoneFactory.getPhone(slotIndex);
-        if (phone != null) {
-            if (!TelephonyPermissions.checkCallingOrSelfReadPhoneState(
-                    mApp, phone.getSubId(), callingPackage, "getRadioPowerState")) {
-                return TelephonyManager.RADIO_POWER_UNAVAILABLE;
-            }
-
-            final long identity = Binder.clearCallingIdentity();
-            try {
-                return phone.getRadioPowerState();
-            } finally {
-                Binder.restoreCallingIdentity(identity);
-            }
-        }
-        return TelephonyManager.RADIO_POWER_UNAVAILABLE;
-    }
-
-    /**
      * Checks if data roaming is enabled on the subscription with id {@code subId}.
      *
      * <p>Requires one of the following permissions: