Revert "Add a warning if a PopupWindow is in a layout" #15595

Job	Run time
cpp_test_driver (ubuntu-22.04)	6m 27s
cpp_test_driver (macos-12)	5m 38s
cpp_test_driver (windows-2022)	7m 31s
cpp_cmake (ubuntu-22.04)	7m 0s
mcu (pico-st7789, thumbv6m-none-eabi)	35s
cpp_cmake (macos-12)	13m 25s
build_and_test (ubuntu-22.04, stable)	14m 10s
mcu (stm32h735g, thumbv7em-none-eabihf)	36s
mcu_esp	2m 26s
cpp_cmake (windows-2022)	9m 9s
build_and_test (ubuntu-22.04, 1.73)	14m 34s
build_and_test (macos-12, stable)	21m 18s
android	1m 44s
node_test (ubuntu-22.04)	2m 43s
build_and_test (windows-2022, stable)	21m 51s
node_test (macos-12)	10m 40s
build_and_test (windows-2022, 1.73)	21m 27s
build_and_test (windows-2022, beta, --exclude ffmpeg --exclude gstreamer-player)	20m 26s
node_test (windows-2022)	14m 23s
esp-idf-quick	8m 53s
ffi_32bit_build	1m 25s
fmt_test	1m 32s
miri	46s
python_test (ubuntu-22.04)	1m 35s
uefi-demo	34s
python_test (macos-12)	1m 33s
updater_test (0.3.0)	1m 50s
python_test (windows-2022)	2m 57s
docs / docs	6m 33s
tree-sitter / tree-sitter-tests	10s
wasm / wasm	4m 19s
wasm_demo / wasm_demo	18m 4s
wasm / lint-slintpad	25s
wasm / build-slintpad	44s
cpp_package_test	2m 46s
	4h 10m 9s

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