[BEEEP] Remove unused error (#668)

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Author: quexten

crates/bitwarden-crypto/src/error.rs

@@ -16,8 +16,6 @@ pub enum CryptoError {
     InvalidKey,
     #[error("The cipher's MAC doesn't match the expected value")]
     InvalidMac,
-    #[error("The key provided expects mac protected encstrings, but the mac is missing")]
-    MacNotProvided,
     #[error("Error while decrypting EncString")]
     KeyDecrypt,
     #[error("The cipher key has an invalid length")]