Removing halving event code.

frontend/src/app/components/mempool-blocks/mempool-blocks.component.scss

@@ -111,21 +111,3 @@
   left: 0;
   z-index: 10;
 }
-
-
-
-// Blinking block
-
-.blink-bg {
-  color: #fff;
-  animation: blinkingBackground 1s infinite;
-  background: inherit !important;
-}
-
-@keyframes blinkingBackground {
-  0%		{ background-color: #10c018;}
-  25%		{ background-color: #1056c0;}
-  50%		{ background-color: #ef0a1a;}
-  75%		{ background-color: #CFB53B;}
-  100%	{ background-color: #04a1d5;}
-}