Remove providers from default features #2016

Job	Run time
Clippy	43s
Validate external types appearing in public API	56s
Measure coverage	44s
Check cross compilation targets	27s
Cargo Deny	7s
Feature Powerset	36s
MSRV	34s
Verify that no-std modes do not rely on libstd (--no-default-features)	6s
Cargo Package	28s
Verify that no-std modes do not rely on libstd (--no-default-features --features alloc)	7s
Check for documentation errors (stable)	25s
Format	6s
Check for documentation errors (beta)	34s
Check semver compatibility	2m 55s
Check for documentation errors (nightly)	35s
Build+test (--all-features, stable)	49s
Build+test (stable, ubuntu-latest)	29s
Build+test (--features=alloc, stable, ubuntu-latest)	30s
Build+test (--no-default-features, stable, ubuntu-latest)	28s
Build+test (--no-default-features --features alloc,std, stable, ubuntu-latest)	27s
Build+test (--all-features, --release, stable, ubuntu-latest)	1m 16s
Build+test (--all-features, nightly, ubuntu-latest)	50s
Build+test (--all-features, beta, ubuntu-latest)	48s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, macos-latest)	52s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, windows-latest)	1m 52s
Build+test (--no-default-features --features alloc,std,aws_lc_rs, stable, ubuntu-latest)	38s
Build+test (--no-default-features --features alloc,std,ring, stable, macos-latest)	54s
Build+test (--no-default-features --features alloc,std,ring, stable, windows-latest)	1m 46s
Build+test (--no-default-features --features alloc,std,ring, stable, ubuntu-latest)	40s
	21m 42s

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