Remove the commented-out snapshot plugin api lines

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

Change-Id: I5dab10d295042e9911dac39d105dd2a56aea5ed3

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 4772563..399efed 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -35,11 +35,7 @@
     repository = GERRIT,
 )
 
-# Plugin APIs
+# Load plugin API
 load("@com_googlesource_gerrit_bazlets//:gerrit_api.bzl", "gerrit_api")
 
-# To build against a local api snapshot jar, simply add the `version` parameter
-# to the below `gerrit_api` macro, like:
-#
-# gerrit_api(version="3.0.10-SNAPSHOT")
 gerrit_api()