Revert "Add: scroll the editor when cursor is outside of the editor"

This reverts commit 5a9ac5ce7d.

edit/source-editor.js

@@ -46,38 +46,6 @@ function createSourceEditor(style) {
   initLint();
   initAppliesToReport(cm);
 
-  window.addEventListener('wheel', e => {
-    if (e.target.closest('.CodeMirror') || parentScrollable(e.target)) {
-      return;
-    }
-    const DELTA_MULTIPLIER = [1, 20, window.innerHeight];
-    scrollBy(
-      cm.getWrapperElement().querySelector('.CodeMirror-scroll'),
-      e.deltaY * DELTA_MULTIPLIER[e.deltaMode]
-    );
-  }, {passive: true});
-
-  function parentScrollable(node) {
-    while (node) {
-      if (node.offsetHeight < node.scrollHeight) {
-        const {overflow} = getComputedStyle(node);
-        if (overflow === 'auto' || overflow === 'scroll') {
-          return true;
-        }
-      }
-      node = node.parentNode;
-    }
-    return false;
-  }
-
-  function scrollBy(el, offset) {
-    if (el.scrollBy) {
-      el.scrollBy({top: offset * 40, behavior: 'smooth'});
-    } else {
-      el.scrollTop += offset;
-    }
-  }
-
   function initAppliesToReport(cm) {
     const APPLIES_TYPE = [
       [t('appliesUrlOption'), 'url'],