Update COMMITTERS

removed Go as he needs to update with his own Apache ID
diff --git a/COMMITTERS b/COMMITTERS
index a96f1bd..e94c8ba 100644
--- a/COMMITTERS
+++ b/COMMITTERS
@@ -11,5 +11,4 @@
 pahilt                       Patrick Hilt
 smihaylov                    Stanislav Mihaylov
 kmccusker                    Kealan McCusker
-spector-in-london            Brian Spector
-goyamamoto                   Go Yamamoto
+brianspector                 Brian Spector