chore: remove inactive sponsors

Author: kamilmysliwiec

index.html

@@ -708,27 +708,13 @@ <h5>Principal sponsors</h5>
           <a href="https://mojam.co/" target="_blank">
             <img src="img/logos/mojam-logo.png" loading="lazy" alt="Mojam" />
           </a>
-          <a href="https://marblism.com?utm_source=nest" target="_blank">
-            <img
-              src="img/logos/marblism-logo.png"
-              loading="lazy"
-              alt="Marblism"
-            />
-          </a>
           <a href="https://valor-software.com/" target="_blank">
             <img
               src="img/logos/valor-software.png"
               loading="lazy"
               alt="Valor Software"
             />
           </a>
-          <a href="https://amplication.com/" target="_blank">
-            <img
-              src="img/logos/amplication-logo.svg"
-              loading="lazy"
-              alt="Amplication"
-            />
-          </a>
         </div>
         <div class="support-section support-section--gold">
           <h5>Gold sponsors</h5>