DATACMNS-661 - Polishing.

Removed the ability to configure a custom SpElExpressionParser for now as it's not really part of the performance optimization. Polished assertions in SpelEvaluatingMethodInterceptor.

Original pull request: #118.

src/test/java/org/springframework/data/projection/SpelAwareProxyProjectionFactoryUnitTests.java

@@ -23,7 +23,6 @@ import java.util.List;
 import org.junit.Before;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Value;
-import org.springframework.expression.spel.standard.SpelExpressionParser;
 
 /**
  * Unit tests for {@link SpelAwareProxyProjectionFactory}.
@@ -66,22 +65,6 @@ public class SpelAwareProxyProjectionFactoryUnitTests {
 		assertThat(properties, hasItem("firstname"));
 	}
 
-	/**
-	 * @see DATACMNS-661
-	 */
-	@Test
-	public void shouldSupportConfiguringFactoryWithCustomSpelParser() {
-
-		Customer customer = new Customer();
-		customer.firstname = "Dave";
-		customer.lastname = "Matthews";
-
-		factory.setParser(new SpelExpressionParser());
-		CustomerExcerpt excerpt = factory.createProjection(CustomerExcerpt.class, customer);
-
-		assertThat(excerpt.getFullName(), is("Dave Matthews"));
-	}
-
 	static class Customer {
 
 		public String firstname, lastname;