MAINTAINERS: Venture: M->R

Due to lack of dedicated time, demoting myself from maintainer to
interested party.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ib5d19c1149422b2f19bb33cde009a63b584d427c
diff --git a/MAINTAINERS b/MAINTAINERS
index 71692ee..1af8048 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -42,6 +42,6 @@
 START OF MAINTAINERS LIST
 -------------------------
 
-M:  Patrick Venture <venture@google.com> <venture!>
 M:  Josh Lehan <krellan@google.com> <krellan!>
 M:  Ed Tanous <edtanous@google.com> <edtanous!>
+R:  Patrick Venture <venture@google.com> <venture!>