Removed existing icons

packages/components/nodes/chains/RetrievalQAChain/QA_Chain.svg

@@ -1,7 +0,0 @@
-<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
-<path d="M14.2881 8.40117C14.2881 6.17663 12.4847 4.37326 10.2602 4.37326L8.69626 4.37326C6.47172 4.37327 4.66836 6.17663 4.66835 8.40117C4.66835 9.22805 4.91751 9.99673 5.34484 10.6362M9.62032 7.50607C9.62031 9.73062 11.4237 11.534 13.6482 11.534L14.4295 11.534H15.2109C16.1716 11.534 17.0538 11.1976 17.7461 10.6362C18.6567 9.89775 19.2388 8.76988 19.2388 7.50607C19.2388 5.28153 17.4354 3.47816 15.2109 3.47816" stroke="black" stroke-width="1.5" stroke-linecap="round"/>
-<ellipse cx="8.875" cy="17.625" rx="1.875" ry="2.625" stroke="black" stroke-width="1.5"/>
-<path d="M10.75 20.25L9.5 19" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M13 20.25L14.875 15L16.75 20.25" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
-<path d="M13.75 19H16" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
-</svg>

packages/components/nodes/chains/RetrievalQAChain/chain.svg

@@ -1,6 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-dna" width="24" height="24" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
-   <path stroke="none" d="M0 0h24v24H0z" fill="none"></path>
-   <path d="M14.828 14.828a4 4 0 1 0 -5.656 -5.656a4 4 0 0 0 5.656 5.656z"></path>
-   <path d="M9.172 20.485a4 4 0 1 0 -5.657 -5.657"></path>
-   <path d="M14.828 3.515a4 4 0 0 0 5.657 5.657"></path>
-</svg>