.cargo/config.toml: remove #1867

Job	Run time
Run cargo deny	22s
Cross-compile Parsec to various targets	5m 2s
build-and-export-test-all-docker	0s
Check links	10s
Check for mismatched dependencies (those that have more than one version)	1m 37s
MSRV - Cargo check all-providers	8m 54s
Various tests targeting a Parsec image with all providers included	21m 3s
Cargo check all-providers (current Rust stable)	7m 45s
Integration tests using CryptoAuthentication Library provider	8m 43s
Check that the fuzz testing framework is still working	9m 43s
Integration tests using Mbed Crypto provider	9m 39s
OnDiskKIM E2E tests on all providers	21m 13s
Integration tests using PKCS 11 provider	9m 25s
Integration tests using TPM provider	14m 50s
Integration tests using Crypto Trusted Service provider	9m 17s
	2h 7m 43s

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