Remove unused experimental cache file flag

go/pkg/credshelper/credshelper.go

@@ -28,8 +28,6 @@ const (
 	CredshelperPathFlag = "credentials_helper"
 	// CredshelperArgsFlag is the flag used to pass in the arguments to the credentials helper binary.
 	CredshelperArgsFlag = "credentials_helper_args"
-	// ExperimentalCredsCachePathFlag is the flag used to pass in the path of the file where credentials should be cached.
-	ExperimentalCredsCachePathFlag = "experimental_creds_cache_file"
 
 	expiryBuffer = 5 * time.Minute
 )

go/pkg/flags/flags.go

@@ -41,8 +41,6 @@ var (
 	CredentialsHelper = flag.String(credshelper.CredshelperPathFlag, "", "Path to the credentials helper binary. If given execrell://, looks for the `credshelper` binary in the same folder as the current executable.")
 	// CredentialsHelperArgs specifies arguments for the credentials helper binary,
 	CredentialsHelperArgs = flag.String(credshelper.CredshelperArgsFlag, "", "Arguments for the credentials helper, separated by space.")
-	// CredsCache specifies the file path where credentials recieved from the credentials helper are cached. If no file is provided then no credentials are cached.
-	CredsCache = flag.String(credshelper.ExperimentalCredsCachePathFlag, "", "Path of the file where credentials should be cached. Credentials are not cached if no file path is provided.")
 	// UseRPCCredentials can be set to false to disable all per-RPC credentials.
 	UseRPCCredentials = flag.Bool("use_rpc_credentials", true, "If false, no per-RPC credentials will be used (disables --credential_file, --use_application_default_credentials, and --use_gce_credentials.")
 	// UseExternalAuthToken specifies whether to use an externally provided auth token, given via PerRPCCreds dial option, should be used.