code: public HttpField remove(String name) {
          HttpField removed = null;
          for (int i = _size; i-- > 0; ) {
              HttpField f = _fields[i];
              if (f.getName().equalsIgnoreCase(name)) {
                  removed = f;
                  System.arraycopy(_fields, i + 1, _fields, i, --_size - i);
              }
          }
          return removed;
      }
docs: Remove a field.
  
  @param name the field to remove
  @return the header that was removed