HADOOP-11166. Remove ulimit from test-patch.sh.

(cherry picked from commit 60f0f6fcde406ed15e9079e0ff34df744b09a844)

dev-support/test-patch.sh

@@ -13,7 +13,6 @@
 
 
 #set -x
-ulimit -n 1024
 
 ### Setup some variables.  
 ### BUILD_URL is set by Hudson if it is run by patch process

hadoop-common-project/hadoop-common/CHANGES.txt

@@ -21,6 +21,8 @@ Release 2.7.0 - UNRELEASED
     HADOOP-10404. Some accesses to DomainSocketWatcher#closed are not protected
     by the lock (cmccabe)
 
+    HADOOP-11166. Remove ulimit from test-patch.sh. (wang)
+
 Release 2.6.0 - UNRELEASED
 
   INCOMPATIBLE CHANGES