Remove providers from default features #2020

Job	Run time
Clippy	35s
Check for documentation errors (stable)	27s
Format	4s
Check cross compilation targets	29s
Check for documentation errors (beta)	37s
Check for documentation errors (nightly)	33s
Cargo Deny	6s
MSRV	33s
Cargo Package	23s
Validate external types appearing in public API	56s
Measure coverage	40s
Feature Powerset	37s
Verify that no-std modes do not rely on libstd (--no-default-features)	6s
Build+test (--all-features, stable)	43s
Verify that no-std modes do not rely on libstd (--no-default-features --features alloc)	6s
Build+test (stable, ubuntu-latest)	34s
Check semver compatibility	26s
Build+test (--features=alloc, stable, ubuntu-latest)	27s
Build+test (--no-default-features, stable, ubuntu-latest)	33s
Build+test (--no-default-features --features alloc,std, stable, ubuntu-latest)	28s
Build+test (--all-features, --release, stable, ubuntu-latest)	1m 20s
Build+test (--all-features, nightly, ubuntu-latest)	47s
Build+test (--all-features, beta, ubuntu-latest)	48s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, macos-latest)	47s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, windows-latest)	3m 22s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, ubuntu-latest)	39s
Build+test (--no-default-features --features alloc,std,ring, stable, macos-latest)	50s
Build+test (--no-default-features --features alloc,std,ring, stable, windows-latest)	2m 59s
Build+test (--no-default-features --features alloc,std,ring, stable, ubuntu-latest)	43s
	21m 38s

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