IGNITE-26740 Refactor GridIntList: remove copyWithout method

Author: chesnokoff

modules/core/src/main/java/org/apache/ignite/internal/util/GridIntList.java

@@ -163,44 +163,6 @@ else if (arr.length == idx)
         arr[idx++] = x;
     }
 
-    /**
-     * Returns (possibly reordered) copy of this list, excluding all elements of given list.
-     *
-     * @param l List of elements to remove.
-     * @return New list without all elements from {@code l}.
-     */
-    public GridIntList copyWithout(GridIntList l) {
-        assert l != null;
-
-        if (idx == 0)
-            return new GridIntList();
-
-        if (l.idx == 0)
-            return new GridIntList(Arrays.copyOf(arr, idx));
-
-        int[] newArr = Arrays.copyOf(arr, idx);
-        int newIdx = idx;
-
-        for (int i = 0; i < l.size(); i++) {
-            int rmVal = l.get(i);
-
-            for (int j = 0; j < newIdx; j++) {
-                if (newArr[j] == rmVal) {
-
-                    while (newIdx > 0 && newArr[newIdx - 1] == rmVal)
-                        newIdx--;
-
-                    if (newIdx > 0) {
-                        newArr[j] = newArr[newIdx - 1];
-                        newIdx--;
-                    }
-                }
-            }
-        }
-
-        return new GridIntList(newArr, newIdx);
-    }
-
     /**
      * @param i Index.
      * @return Value.