Remove Python 2 from supported versions

Python 2 was EOL over two years ago so we should stop supporting it.
Python 3.4 to 3.6 is EOL as well so there is no reason in keeping it as
well. Python 3.9 and 3.10 are new versions that we should support

setup.py

@@ -295,6 +295,7 @@ if __name__ == "__main__":
         author_email="[email protected]",
         url="https://frida.re",
         install_requires=["setuptools"],
+        python_requires=">=3.7",
         license="wxWindows Library Licence, Version 3.1",
         keywords="frida debugger dynamic instrumentation inject javascript windows macos linux ios iphone ipad android qnx",
         classifiers=[
@@ -309,14 +310,11 @@ if __name__ == "__main__":
             "Operating System :: MacOS :: MacOS X",
             "Operating System :: Microsoft :: Windows",
             "Operating System :: POSIX :: Linux",
-            "Programming Language :: Python :: 2",
-            "Programming Language :: Python :: 2.7",
             "Programming Language :: Python :: 3",
-            "Programming Language :: Python :: 3.4",
-            "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",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: JavaScript",
             "Topic :: Software Development :: Debuggers",