Remove unnecessary "throws" declarations

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=201058582

javatests/google/registry/tools/EncryptEscrowDepositCommandTest.java

@@ -54,7 +54,7 @@ public class EncryptEscrowDepositCommandTest
   }
 
   @Before
-  public void before() throws Exception {
+  public void before() {
     command.encryptor = createEncryptor();
   }