chore: remove obsolete Mustache dependency note from build.gradle (AIC-2695)

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: ctawiah

lib/sdk/server-ai/build.gradle

@@ -45,13 +45,6 @@ ext.versions = [
     // The *lowest* version of the base SDK we are compatible with. LDClientInterface
     // appears in this library's public signature, so it is exposed as an `api` dependency.
     "sdk": "7.14.0"
-    // NOTE: the Mustache templating engine (for AI Config message/instruction interpolation) is
-    // intentionally NOT declared as an external dependency. Per the SDK team's supply-chain guidance
-    // we do not link the external com.samskivert:jmustache artifact; its source has been vendored
-    // (copied into the relocated internal package com.launchdarkly.sdk.server.ai.internal.mustache)
-    // so it is compiled from source and ships inside this jar with no third-party runtime dependency.
-    // See THIRD-PARTY-NOTICES.txt for the upstream license (BSD 3-Clause, Copyright (c) 2010 Michael
-    // Bayne) and src/.../internal/mustache for the vendored source (AIC-2695).
 ]
 
 ext.libraries = [:]