Make hard-coded shortcut "Shift-DEL" be abled to be disabled #114

Job	Run time
build_windows_cmake (Release, x64, amd64)	4m 15s
build_windows (Release, x64)	4m 46s
build_windows_msys2 (Release, x86_64)	6m 20s
build_windows (Release, Win32)	4m 18s
build_windows_msys2 (Release, i686)	6m 16s
build_windows (Release, ARM64)	4m 20s
build_windows_msys2 (Debug, x86_64)	6m 24s
build_windows (Debug, x64)	6m 5s
build_windows_msys2 (Debug, i686)	5m 29s
build_windows (Debug, Win32)	4m 51s
build_windows (Debug, ARM64)	3m 34s
	56m 38s

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