refactor: remove legacy frozen runtime compatibility path

Author: zouyonghe

main.py

@@ -2,47 +2,9 @@
 import asyncio
 import mimetypes
 import os
-import runpy
 import sys
 from pathlib import Path
 
-
-def _run_python_compat_mode_if_needed() -> None:
-    """Support subprocess calls that expect a Python interpreter in frozen mode."""
-    if not getattr(sys, "frozen", False):
-        return
-
-    if len(sys.argv) < 2:
-        return
-
-    command = sys.argv[1]
-
-    if command == "-c":
-        if len(sys.argv) < 3:
-            raise SystemExit("astrbot-backend: argument expected for -c")
-        code = sys.argv[2]
-        sys.argv = ["-c", *sys.argv[3:]]
-        exec(code, {"__name__": "__main__", "__package__": None, "__spec__": None})  # noqa: S102
-        raise SystemExit(0)
-
-    if command == "-m":
-        if len(sys.argv) < 3:
-            raise SystemExit("astrbot-backend: argument expected for -m")
-        module_name = sys.argv[2]
-        sys.argv = [module_name, *sys.argv[3:]]
-        runpy.run_module(module_name, run_name="__main__", alter_sys=True)
-        raise SystemExit(0)
-
-    script_path = Path(command)
-    if script_path.is_file():
-        resolved_script = script_path.resolve().as_posix()
-        sys.argv = [resolved_script, *sys.argv[2:]]
-        runpy.run_path(resolved_script, run_name="__main__")
-        raise SystemExit(0)
-
-
-_run_python_compat_mode_if_needed()
-
 import runtime_bootstrap  # noqa: E402
 
 runtime_bootstrap.initialize_runtime_bootstrap()