Remove pics from license (#13)

Author: famura

license.md

@@ -1,5 +1,3 @@
 <a href="https://github.com/famura/binned-cdf">binned-cdf</a> © 2025 by
 <a href="https://github.com/famura">Fabio Muratore</a> is licensed under
 <a href="https://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>
-<img src="https://mirrors.creativecommons.org/presskit/icons/cc.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;">
-<img src="https://mirrors.creativecommons.org/presskit/icons/by.svg" alt="" style="max-width: 1em;max-height:1em;margin-left: .2em;">

readme.md

@@ -1,6 +1,6 @@
 # binned-cdf
 
-[![License: MIT][license-badge]][license-url]
+[![License: CC-BY-4.0][license-badge]][license-url]
 ![python][python-badge]<space>
 [![Docs][docs-badge]][docs]
 [![CI][ci-badge]][ci]