BUILD: Remove innacurate SNAPSHOT suffix from manifest version

Change-Id: I9cde2cfbc916be519e65a2d18e8ef06219da8a41
diff --git a/BUILD b/BUILD
index 3e17a1d..9e3a045 100644
--- a/BUILD
+++ b/BUILD
@@ -6,7 +6,7 @@
     srcs = glob(["src/main/java/**/*.java"]),
     manifest_entries = [
         "Gerrit-PluginName: uploadvalidator",
-        "Gerrit-ApiVersion: 2.15-SNAPSHOT",
+        "Gerrit-ApiVersion: 2.15",
         "Gerrit-Module: com.googlesource.gerrit.plugins.uploadvalidator.Module",
     ],
     resources = glob(["src/main/resources/**/*"]),