Normalize the `BUILD` file licenses comments.

PiperOrigin-RevId: 271416217

BUILD

 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 exports_files(["LICENSE"])

docs/BUILD

 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0 License
+licenses(["notice"])
 
 # This exists for the API doc generator. It needs to exist here because the
 # api_docs directory gets blown away by the tool each time it runs.

docs/tutorials/BUILD

 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This exists for the API doc generator. The doc generator tool looks for API
 # usage in tutorial content and links to the tutorials in the API doc content.

tensorflow_federated/BUILD

 package(default_visibility = ["//visibility:private"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 exports_files(["LICENSE"])
 

tensorflow_federated/proto/BUILD

 package(default_visibility = ["//visibility:private"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "proto",

tensorflow_federated/proto/v0/BUILD

@@ -2,7 +2,7 @@ load("@com_google_protobuf//:protobuf.bzl", "py_proto_library")
 
 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "v0",

tensorflow_federated/python/BUILD

 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "python",

tensorflow_federated/python/common_libs/BUILD

 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # NOTE: TFF code outside this directory can depend on libraries defined in this
 # directory, but not the other way round. In particular, utility classes and

tensorflow_federated/python/core/BUILD

 package(default_visibility = ["//tensorflow_federated:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # Modules outside the core/ directory should import this.
 py_library(

tensorflow_federated/python/core/api/BUILD

 package(default_visibility = ["//tensorflow_federated:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This is the import for other components of TFF that are layered upon the Core API.
 py_library(

tensorflow_federated/python/core/backends/BUILD

 package(default_visibility = ["//tensorflow_federated:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "backends",

tensorflow_federated/python/core/backends/mapreduce/BUILD

 package(default_visibility = ["//visibility:private"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "mapreduce",

tensorflow_federated/python/core/framework/BUILD

 package(default_visibility = ["//tensorflow_federated/python/core:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "framework",

tensorflow_federated/python/core/impl/BUILD

@@ -6,7 +6,7 @@ package(default_visibility = [
     "//tensorflow_federated/python/core/utils:__subpackages__",
 ])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This package group is temporary and can be removed when all the appropriate
 # modules have been moved to the `compiler` package.

tensorflow_federated/python/core/impl/compiler/BUILD

@@ -6,7 +6,7 @@ package(default_visibility = [
     "//tensorflow_federated/python/core/utils:__subpackages__",
 ])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "compiler",

tensorflow_federated/python/core/impl/utils/BUILD

@@ -7,7 +7,7 @@ package(default_visibility = [
     "//tensorflow_federated/python/core/utils:__subpackages__",
 ])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 py_library(
     name = "utils",

tensorflow_federated/python/core/utils/BUILD

 package(default_visibility = ["//tensorflow_federated/python/core:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This is the import for other components of TFF that are layered upon the Core
 # utils.

tensorflow_federated/python/learning/BUILD

 package(default_visibility = ["//tensorflow_federated/python/learning:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This is the import for clients that use federated learning (see `README.md`).
 py_library(

tensorflow_federated/python/learning/framework/BUILD

 package(default_visibility = ["//tensorflow_federated/python/learning:__subpackages__"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 # This is the import for clients that contribute components to federated learning (see `../README.md`).
 py_library(

tensorflow_federated/python/research/BUILD

 package(default_visibility = ["//visibility:private"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 package_group(
     name = "research",