maven_jar.bzl: Remove stale comment about snapshot support
maven_jar.bzl: Remove stale comment about snapshot support

Change-Id: Ie2385a70acb10a271cef37c31635ede5303bae74

GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit