sat: remove colab/flags.py

Author: Mizux

cmake/python.cmake

@@ -416,7 +416,6 @@ file(COPY
   ortools/sat/python/cp_model.py
   DESTINATION ${PYTHON_PROJECT_DIR}/sat/python)
 file(COPY
-  ortools/sat/colab/flags.py
   ortools/sat/colab/visualization.py
   DESTINATION ${PYTHON_PROJECT_DIR}/sat/colab)
 file(COPY

ortools/sat/colab/BUILD.bazel

@@ -15,12 +15,6 @@
 
 load("@rules_python//python:py_library.bzl", "py_library")
 
-py_library(
-    name = "flags",
-    srcs = ["flags.py"],
-    visibility = ["//visibility:public"],
-)
-
 py_library(
     name = "visualization",
     srcs = ["visualization.py"],