Remove the commented-out snapshot plugin api lines

Rely on bazlets README documentation for how to use a SNAPSHOT version.

Change-Id: If7de3bad118cc04195d1c56f329f39f4a193089e

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 911d17f..e87342b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -12,12 +12,8 @@
     "gerrit_api",
 )
 
-# Load release Plugin API
 gerrit_api()
 
-# Load snapshot Plugin API
-#gerrit_api(version = "3.0.xy-SNAPSHOT")
-
 load("//:external_plugin_deps.bzl", "external_plugin_deps")
 
 external_plugin_deps()