Removed the unused RIL constant

We should use Integer.MAX_VALUE instead defining our own MAX_INT

bug: 27787361
Change-Id: I9630d66674530f9b7a8843cc454d0382b738463c

telephony/java/com/android/internal/telephony/RILConstants.java

@@ -33,8 +33,6 @@ public interface RILConstants {
     // From the top of ril.cpp
     int RIL_ERRNO_INVALID_RESPONSE = -1;
 
-    int MAX_INT = 0x7FFFFFFF;
-
     // from RIL_Errno
     int SUCCESS = 0;
     int RADIO_NOT_AVAILABLE = 1;              /* If radio did not start or is resetting */