MM-60913 - Removing override from webhook buttons (#28769)

webapp/channels/src/sass/layout/_webhooks.scss

@@ -371,26 +371,7 @@
             }
 
             button {
-                border: none;
                 margin-top: 8px;
-                background-color: rgba(var(--center-channel-color-rgb), 0.08);
-                color: var(--center-channel-color);
-                font-size: 13px;
-                outline: 0;
-
-                &:hover {
-                    background-color: rgba(var(--center-channel-color-rgb), 0.12);
-                    text-decoration: none;
-                }
-
-                &[disabled] {
-                    cursor: auto;
-                    opacity: 0.5;
-                }
-
-                a {
-                    color: inherit;
-                }
             }
 
             .alert {