Make  buildbot licenses consistent with the rest of the code
diff --git a/BUILD.bazel b/BUILD.bazel
index b1a1967..cc18aa2 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -6,7 +6,7 @@
 #
 # Khronos reference front-end for GLSL and ESSL, and sample SPIR-V generator.
 
-licenses(["notice"])  # Mixed: BSD, MIT, Khronos, Apache 2.0
+licenses(["notice"])
 
 exports_files(["LICENSE"])