Remove jmgao from OWNERS files.

Josh no longer works on Android, so remove him from OWNERS files.

Test: NA
Change-Id: I676cd803b5e3167db1b5175a630d85d1edfcaaaf
diff --git a/debuggerd/OWNERS b/debuggerd/OWNERS
index bfeedca..6f7e4a3 100644
--- a/debuggerd/OWNERS
+++ b/debuggerd/OWNERS
@@ -1,2 +1 @@
 cferris@google.com
-jmgao@google.com
diff --git a/diagnose_usb/OWNERS b/diagnose_usb/OWNERS
index 643b448..fcd7757 100644
--- a/diagnose_usb/OWNERS
+++ b/diagnose_usb/OWNERS
@@ -1,2 +1 @@
-jmgao@google.com
 yabinc@google.com
diff --git a/fastboot/OWNERS b/fastboot/OWNERS
index a72ee07..58b2a81 100644
--- a/fastboot/OWNERS
+++ b/fastboot/OWNERS
@@ -1,4 +1,3 @@
 dvander@google.com
 hridya@google.com
 enh@google.com
-jmgao@google.com