[Fix #12638] Fix an Errno::ENOENT error when using server mode

Fixes #12638.

There is a possibility of a race condition occurring with the status file
when using server mode. The status file is updated to a new status by
`Cache.write_status_file` (`Pathname#write`), so there is no need to clear
it by deleting the file.

Due to the difficulty in reproducing this race conditions, test code for this
have not been added.

changelog/fix_an_error_when_using_sever_mode.md

@@ -0,0 +1 @@
+* [#12638](https://github.com/rubocop/rubocop/issues/12638): Fix an `Errno::ENOENT` error when using server mode. ([@koic][])

lib/rubocop/server/client_command/exec.rb

@@ -17,7 +17,6 @@ module ClientCommand
       class Exec < Base
         def run
           ensure_server!
-          Cache.status_path.delete if Cache.status_path.file?
           read_stdin = ARGV.include?('-s') || ARGV.include?('--stdin')
           send_request(
             command: 'exec',

lib/rubocop/server/server_command/exec.rb

@@ -16,7 +16,6 @@ module ServerCommand
       # @api private
       class Exec < Base
         def run
-          Cache.status_path.delete if Cache.status_path.file?
           # RuboCop output is colorized by default where there is a TTY.
           # We must pass the --color option to preserve this behavior.
           @args.unshift('--color') unless %w[--color --no-color].any? { |f| @args.include?(f) }