Remove span in generated field getter #1581

Job	Run time
build_benchmarks	1m 2s
build_examples	3m 26s
Check	1m 6s
build_nightly	1m 38s
Verify that web-sys is compiled correctly	55s
Clippy	5m 19s
dist_linux_aarch64_gnu	2m 52s
dist_linux_x86_64_musl	2m 26s
dist_macos_aarch64	3m 56s
dist_macos_x86_64	4m 11s
doc_api	1m 9s
dist_windows	3m 7s
doc_book	13s
Rustfmt	13s
Build and test the deno example	57s
Run js-sys crate tests	2m 16s
Run wasm-bindgen crate tests with multithreading enabled	1m 29s
Run native tests	1m 44s
Run UI compile-fail tests	4m 30s
Test TypeScript output of wasm-bindgen	1m 21s
Run wasm-bindgen crate tests (unix)	9m 20s
Run wasm-bindgen-webidl crate tests	2m 22s
Run web-sys crate tests	3m 57s
test_examples	2m 0s
deploy	1m 22s
	1h 2m 51s

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