[setup] fixed nightly release (#5388)

setup.py

@@ -1,6 +1,5 @@
 import os
 import sys
-from datetime import datetime
 from typing import List
 
 from setuptools import find_packages, setup
@@ -15,7 +14,6 @@ except ImportError:
 
 THIS_DIR = os.path.dirname(os.path.abspath(__file__))
 BUILD_EXT = int(os.environ.get("BUILD_EXT", "0")) == 1
-IS_NIGHTLY = int(os.environ.get("NIGHTLY", "0")) == 1
 
 # we do not support windows currently
 if sys.platform == "win32":
@@ -96,23 +94,15 @@ if BUILD_EXT:
 else:
     ext_modules = []
 
-# always put not nightly branch as the if branch
-# otherwise github will treat colossalai-nightly as the project name
-# and it will mess up with the dependency graph insights
-if not IS_NIGHTLY:
-    version = get_version()
-    package_name = "colossalai"
-else:
-    # use date as the nightly version
-    version = datetime.today().strftime("%Y.%m.%d")
-    package_name = "colossalai-nightly"
+version = get_version()
+package_name = "colossalai"
 
 setup(
     name=package_name,
     version=version,
     packages=find_packages(
         exclude=(
-            "op_builder",
+            "extensions",
             "benchmark",
             "docker",
             "tests",