Remove deprecated APIs

openssl/src/crypto.rs

openssl/src/dsa.rs

openssl/src/ec.rs

openssl/src/ec_key.rs

openssl/src/hash.rs

openssl/src/lib.rs

openssl/src/pkey.rs

openssl/src/rsa.rs

openssl/src/sign.rs

openssl/src/ssl/callbacks.rs

openssl/src/ssl/connector.rs

openssl/src/ssl/tests/mod.rs

openssl/src/string.rs

openssl/src/types.rs

openssl/src/util.rs

openssl/src/x509/extension.rs

openssl/src/x509/mod.rs

openssl/src/x509/tests.rs