remove not necessary fix (#7792)

lettre/style.css

@@ -136,20 +136,6 @@ input:not([type="submit"]):not([type="button"]):focus {
 	margin: 0;
 }
 
-/*
- * Fixes an issue with Jetpack Subscribe block.
- * Necessary until Jetpack 11.7 is released:
- * https://github.com/Automattic/jetpack/milestone/295
- */
-
-.wp-block-jetpack-subscriptions__container .wp-element-button:not(.block-editor-rich-text__editable),
-.wp-block-jetpack-subscriptions__container .wp-block-button__link:not(.block-editor-rich-text__editable) {
-	font-size: inherit;
-	margin-top: 10px;
-	padding: 24px 36px 24px 36px;
-	width: 100%;
-}
-
 /*
  * Refine mobile navigation styling.
  */