Remove branding policy text from docs front page

Agent-Logs-Url: https://github.com/MShirazAhmad/PhysPlot/sessions/d59a7262-de13-4cf1-a994-5daefc9ee0a7

Co-authored-by: MShirazAhmad <35538879+MShirazAhmad@users.noreply.github.com>

Author: Copilot

docs/index.rst

@@ -8,11 +8,6 @@ PhysPlot: Advanced Plotting Made Simple
 
 PhysPlot is a scientific plotting software with a graphical user interface, designed to produce publication-ready 2D plots. It supports vector and bitmap outputs and allows importing, transforming, plotting, fitting, and exporting datasets.
 
-Branding
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-
-PhysPlot documentation uses the official wide brand asset ``_static/PhysPlotWide.png`` on the home page and follows the project trademark policy for name and logo usage.
-
 Plugin System
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