tools-imgui: cleanup

tools-imgui/level_editor.cpp

@@ -229,7 +229,6 @@ struct SpriteImporter
 			}
 
 			ImGui::InvisibleButton("canvas", canvas_size);
-			ImVec2 mouse_pos_in_canvas = ImVec2(ImGui::GetIO().MousePos.x - canvas_pos.x, ImGui::GetIO().MousePos.y - canvas_pos.y);
 			draw_list->PushClipRect(canvas_pos, ImVec2(canvas_pos.x+canvas_size.x, canvas_pos.y+canvas_size.y));      // clip lines within the canvas (if we resize it, etc.)
 		}
 #endif