Frameworks/base: Avoid useless array allocation

Don't allocate an unused array.

Bug: 19797138
Change-Id: I40539e7659a21a34a7d49c48bbeb51acf9bfe235
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 9a185bb..22d30df 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -11772,13 +11772,11 @@
 
         boolean killed = false;
         synchronized (mPidsSelfLocked) {
-            int[] types = new int[pids.length];
             int worstType = 0;
             for (int i=0; i<pids.length; i++) {
                 ProcessRecord proc = mPidsSelfLocked.get(pids[i]);
                 if (proc != null) {
                     int type = proc.setAdj;
-                    types[i] = type;
                     if (type > worstType) {
                         worstType = type;
                     }