Revert "[Feature] Setting number of apiserver workers automatically (#3794)" (#3918)

This reverts commit d1d063e4af.

fastdeploy/utils.py

@@ -27,7 +27,6 @@ import sys
 import tarfile
 import time
 from datetime import datetime
-from importlib.metadata import PackageNotFoundError, distribution
 from logging.handlers import BaseRotatingHandler
 from pathlib import Path
 from typing import Literal, TypeVar, Union
@@ -669,14 +668,6 @@ def import_from_path(module_name: str, file_path: Union[str, os.PathLike]):
     return module
 
 
-def is_package_installed(package_name):
-    try:
-        distribution(package_name)
-        return True
-    except PackageNotFoundError:
-        return False
-
-
 def version():
     """
     Prints the contents of the version.txt file located in the parent directory of this script.