Correct lint issues found after the toolchain upgrade to version 1.49.0

[RobertDrazkowskiGL]

The newly released (01.01.2021) rust toolchain version 1.49.0 found a following lint problem:

error: explicit lifetimes given in parameter types where they could be elided (or replaced with `'_` if needed by type declaration)
  --> src/providers/pkcs11/key_metadata.rs:16:5
   |
16 | /     pub(super) fn get_ordered_locks<'a>(
17 | |         &'a self,
18 | |     ) -> (
19 | |         &'a RwLock<dyn ManageKeyInfo + Send + Sync>,
20 | |         &'a RwLock<LocalIdStore>,
21 | |     ) {
   | |_____^
   |
   = note: `-D clippy::needless-lifetimes` implied by `-D clippy::all`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes

It needs to be fixed to unblock further development, including merging PR#303 (a new CryptoAuthentication Library based provider).

[ionut-arm]

This will need to be solved for all the other parallaxsecond crates as well