Update code owners (#1321)

.github/CODEOWNERS

@@ -12,10 +12,4 @@
 # This should make it easy to add new rules without breaking existing ones.
 
 # Global rule:
-* @cleemullins @munozemilio @joshgummersall
-
-/build/**                          @munozemilio
-/data/**                           @munozemilio
-/packages/**                       @munozemilio
-/scripts/**                        @munozemilio
-/specs/**                          @scheyal
+* @microsoft/botframework-sdk