Fix for IllegalMonitorStateException in Cache Abuser

AsyncTask.wait was being called outside of a synchronize block,
causing an IllegalMonitorStateException.  This replaces the wait
with a Thread.sleep.

BUG=b.android.com/203846

Change-Id: Ib370f702c1e0f76657292955de2406ce7f065e69

apps/Development/src/com/android/development/CacheAbuser.java

@@ -78,7 +78,7 @@ public class CacheAbuser extends Activity {
                 } catch (IOException e) {
                     Log.w("CacheAbuser", "Write failed to " + file + ": " + e);
                     try {
-                        wait(5*1000);
+                        Thread.sleep(5*1000);
                     } catch (InterruptedException e1) {
                     }
                 } finally {