Remove actions envs that aren't needed anymore

Summary: These aren't needed anymore because of the new toolchain build process.

Test Plan: existing, jenkins

Reviewers: vihang, michelle, jamesbartlett

Reviewed By: vihang, jamesbartlett

Signed-off-by: Zain Asgar <zasgar@pixielabs.ai>

Differential Revision: https://phab.corp.pixielabs.ai/D12831

GitOrigin-RevId: 41251c4418c738d4eb4c1741986a5f59bf4eed65

.bazelrc

@@ -8,10 +8,6 @@ test --java_runtime_version=remotejdk_11
 # https://github.com/bazelbuild/rules_jvm_external/issues/445
 common --repo_env=JAVA_HOME=../bazel_tools/jdk
 
-# This is to flush bazel cache for new version of clang/gcc.
-build --action_env=CLANG_COMPILER_VERSION=15.0_3
-build --host_action_env=CLANG_COMPILER_VERSION=15.0_3
-
 build --remote_download_minimal
 test --remote_download_minimal
 run --remote_download_outputs=all
@@ -22,11 +18,6 @@ coverage --build_runfile_links
 # for updates.
 common --incompatible_remove_rule_name_parameter=false
 
-build:clang --action_env=CC
-build:clang --host_action_env=CC
-build:clang --action_env=CXX
-build:clang --host_action_env=CXX
-
 # Get version information into the build.
 build --workspace_status_command=bazel/get_workspace_status.sh
 
@@ -75,11 +66,6 @@ build:linux --platforms=//bazel/cc_toolchains:linux-x86_64
 build:linux --incompatible_enable_cc_toolchain_resolution
 build:linux --action_env=BAZEL_DO_NOT_DETECT_CPP_TOOLCHAIN=1
 
-# Default mac config. Same as clang except we can't statically link,
-# and mac does not use libstdc++.
-build:macos --action_env=BAZEL_LINKLIBS
-build:macos --action_env=BAZEL_LINKOPTS
-
 # Build for Clang:
 build:clang --//bazel/cc_toolchains:compiler=clang
 build:clang --//bazel/cc_toolchains:libc_version=gnu