[CodeStyle][py36] update requirements.txt and setup.py.in (#49516)

* update requirements.txt and setup.py.in

* update requirements.txt setup.py.in setup.py

python/setup.py.in

@@ -811,11 +811,10 @@ with redirect_stdout():
             'Intended Audience :: Science/Research',
             'License :: OSI Approved :: Apache Software License',
             'Programming Language :: C++',
-            'Programming Language :: Python :: 2.7',
-            'Programming Language :: Python :: 3.5',
-            'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',
             'Programming Language :: Python :: 3.8',
+            'Programming Language :: Python :: 3.9',
+            'Programming Language :: Python :: 3.10',
         ],
     )
 

python/unittest_py/requirements.txt

-pynacl==1.4.0 ; python_version == "3.6"
 PyGithub
 coverage==5.5
 pycrypto ; platform_system != "Windows"
@@ -9,11 +8,10 @@ hypothesis
 opencv-python<=4.2.0.32
 visualdl
 paddle2onnx>=0.9.6
-scipy>=1.6; python_version >= "3.7"
-scipy>=1.5; python_version == "3.6"
+scipy>=1.6
 prettytable
 distro
-numpy>=1.20,<1.22; python_version >= "3.7"
+numpy>=1.20,<1.22
 autograd==1.4
 librosa==0.8.1
 parameterized

setup.py

@@ -1408,11 +1408,10 @@ def main():
             'Intended Audience :: Science/Research',
             'License :: OSI Approved :: Apache Software License',
             'Programming Language :: C++',
-            'Programming Language :: Python :: 2.7',
-            'Programming Language :: Python :: 3.5',
-            'Programming Language :: Python :: 3.6',
             'Programming Language :: Python :: 3.7',
             'Programming Language :: Python :: 3.8',
+            'Programming Language :: Python :: 3.9',
+            'Programming Language :: Python :: 3.10',
         ],
     )