Python 3.7 deprecated

Author: dbrattli

README.rst

@@ -28,7 +28,7 @@ ReactiveX for Python v4
 For v3.X please go to the `v3 branch
 <https://github.com/ReactiveX/RxPY/tree/release/v3.2.x>`_.
 
-ReactiveX for Python v4.x runs on `Python <http://www.python.org/>`_ 3.7 or above. To
+ReactiveX for Python v4.x runs on `Python <http://www.python.org/>`_ 3.8 or above. To
 install:
 
 .. code:: console

pyproject.toml

@@ -15,7 +15,6 @@ classifiers = [
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",