Merge pull request #209 from raindev/patch-1

Remove unused imports from SecureRandomBytesKeyGenerator

crypto/src/main/java/org/springframework/security/crypto/keygen/SecureRandomBytesKeyGenerator.java

@@ -15,8 +15,6 @@
  */
 package org.springframework.security.crypto.keygen;
 
-import java.security.NoSuchAlgorithmException;
-import java.security.NoSuchProviderException;
 import java.security.SecureRandom;
 
 /**