LibWeb: Don't shift right-floated boxes too much to the left

We were subtracting the content width of right-floated boxes from their
X position for no reason. Removing this makes floats snuggle up to each
other on the right side. :^)

Userland/Libraries/LibWeb/Layout/BlockFormattingContext.cpp

@@ -612,7 +612,6 @@ void BlockFormattingContext::layout_floating_child(Box const& box, BlockContaine
  fits_on_line = (wanted_x + box_state.content_width + box_state.padding_right + box_state.border_right + box_state.margin_right) <= containing_block_content_width;
  } else {
  auto previous_left_border_edge = previous_box_state.offset.x()
- - previous_box_state.content_width
  - previous_box_state.padding_left
  - previous_box_state.border_left
  - margin_collapsed_with_previous;