remove format filter after pixscope #741

Job	Run time
build-macos-no-brew (clang-9)	5m 30s
build-linux (gcc-9)	7m 50s
build-linux-Qt6 (gcc-9)	8m 7s
build-macos-brew (clang-9)	2m 45s
build-macos-brew-Qt6 (clang-9)	3m 49s
build-macos-no-brew-Qt6 (clang-9)	5m 8s
build-windows-mingw (5.15.*)	10m 10s
build-windows-mingw-Qt6 (6.3.0, qtmultimedia qt5compat)	10m 34s
build-windows-vs (5.15.*)	7m 50s
build-windows-vs-Qt6 (6.3.0, qtmultimedia qt5compat)	13m 30s
	1h 15m 13s

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