Remove bazel 6.x only flags (#2678)

Author: keith

.bazelrc

@@ -28,8 +28,3 @@ build --worker_sandboxing=true
 
 # Use llvm-cov instead of gcov (default).
 coverage --experimental_use_llvm_covmap
-
-build --enable_platform_specific_config
-build:macos --apple_crosstool_top=@local_config_apple_cc//:toolchain
-build:macos --crosstool_top=@local_config_apple_cc//:toolchain
-build:macos --host_crosstool_top=@local_config_apple_cc//:toolchain

test/apple_shell_testutils.sh

@@ -469,9 +469,6 @@ function do_action() {
       # Used so that if there's a single configuration transition, its output
       # directory gets mapped into the bazel-bin symlink.
       "--use_top_level_targets_for_symlinks"
-      "--apple_crosstool_top=@local_config_apple_cc//:toolchain"
-      "--crosstool_top=@local_config_apple_cc//:toolchain"
-      "--host_crosstool_top=@local_config_apple_cc//:toolchain"
       "--enable_bzlmod"
       "--ios_simulator_device=iPhone 16"
   )