Remove Gecko-internal CSP dictionary bindings (#3721) #19

Job	Run time
build_benchmarks	57s
build_examples	3m 24s
build_nightly	1m 47s
Check	1m 6s
Verify that web-sys is compiled correctly	52s
Clippy	5m 16s
dist_linux_aarch64_gnu	2m 45s
dist_linux_x86_64_musl	2m 24s
dist_macos_aarch64	1m 59s
dist_macos_x86_64	1m 57s
dist_windows	3m 20s
doc_api	1m 9s
doc_book	9s
Rustfmt	14s
Build and test the deno example	51s
Run js-sys crate tests	2m 14s
Run native tests	1m 47s
Run wasm-bindgen crate tests with multithreading enabled	1m 42s
Test TypeScript output of wasm-bindgen	1m 13s
Run UI compile-fail tests	4m 31s
Run wasm-bindgen crate tests (unix)	5m 43s
Run web-sys crate tests	3m 57s
Run wasm-bindgen-webidl crate tests	2m 6s
test_examples	2m 23s
deploy	2m 6s
	55m 52s

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