Remove Cheng from MAINTAINERS list

He leaves this project.

Change-Id: I61f17edbc557e5e0bf2fb9441700c7ec16794fc6
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 8a39d5f..9b975c6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -42,6 +42,5 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Cheng C Yang <cheng.c.yang@linux.intel.com> <cyang29!>
 M:  Chen Yugang <yugang.chen@linux.intel.com> <ygangch!>
 M:  Kuiying Wang <kuiying.wang@intel.com> <kuiyingw!>