remove torch version

setup.py

@@ -322,20 +322,12 @@ def get_sha(root: Union[str, Path]) -> str:
 def get_version_add(sha: Optional[str] = None) -> str:
     vllm_root = os.path.dirname(os.path.abspath(__file__))
     add_version_path = os.path.join(os.path.join(vllm_root, "vllm"), "version.py")
-    major, minor, *res = torch.__version__.split('.')
     if add_git_version:
         if sha != 'Unknown':
             if sha is None:
                 sha = get_sha(vllm_root)
-            if (major, minor) == ('2', '1'):
-                version = 'das.opt1.' + sha[:7]
-            if (major, minor) == ('2', '3'):
-                version = 'das.opt2.' + sha[:7]
     else:
-        if (major, minor) == ('2', '1'):
         version = 'das.opt1'
-        if (major, minor) == ('2', '3'):
-            version = 'das.opt2'
 
     # dtk version
     if os.getenv("ROCM_PATH"):