Clean up note regarding Python version.

CONTRIBUTING.md

@@ -30,8 +30,8 @@ and run it locally.
 These are prerequisites for an environment required for a contributor to
 be able to work on TabPy changes:
 
-- Python 3.7, 3.8 or 3.9:
-  - To see which version of Python you have installed, run `python --version`.
+- Supported 64-bit Python version (see [README](https://github.com/tableau/TabPy) for a list 
+of compatible versions).
 - git
 - Node.js for npm packages - install from <https://nodejs.org>.
 - NPM packages - install all with

docs/server-install.md

@@ -15,13 +15,9 @@ These instructions explain how to install and start up TabPy Server.
 
 ## TabPy Installation
 
-### Prerequisites
-
-- TabPy only supports Python versions 3.7, 3.8, 3.9, and 3.10
-- TabPy 2.7.0 added support for data streaming via
-Apache Arrow Flight (`pyarrow`). When using TabPy >= 2.7.0, we
-recommend using a Python 64-bit installer to avoid incompatibility issues
-related to `pyarrow`.
+First, ensure that you are using a supported 64-bit Python version. 
+Refer to the [README](https://github.com/tableau/TabPy) for a list 
+of compatible versions.
 
 ### Installation