Editor remove unused variable 'rect'
Fix issue "src/Editor.cpp:1644: warning: Unused variable 'rect' src/Editor.cpp:1644:5: unused QRect [clazy-unused-non-trivial-variable]".
Fix issue "src/Editor.cpp:1644: warning: Unused variable 'rect' src/Editor.cpp:1644:5: unused QRect [clazy-unused-non-trivial-variable]".