Remove blobby patching

Author: newpavlov

Cargo.toml

@@ -33,7 +33,3 @@ opt-level = 2
 sha1 = { path = "sha1" }
 sha3 = { path = "sha3" }
 whirlpool = { path = "whirlpool" }
-
-# https://github.com/RustCrypto/utils/pull/1187
-# https://github.com/RustCrypto/utils/pull/1207
-blobby = { git = "https://github.com/RustCrypto/utils" }