Provide deleted object to KeyValueTemplate instead of deleting entities by Id.

Closes #438

Author: mp911de

src/main/java/org/springframework/data/keyvalue/repository/support/SimpleKeyValueRepository.java

@@ -174,7 +174,7 @@ public void delete(T entity) {
 
 		Assert.notNull(entity, "The given entity must not be null!");
 
-		deleteById(entityInformation.getRequiredId(entity));
+		operations.delete(entity);
 	}
 
 	/*

src/test/java/org/springframework/data/keyvalue/repository/SimpleKeyValueRepositoryUnitTests.java

@@ -47,6 +47,7 @@
  * @author Christoph Strobl
  * @author Eugene Nikiforov
  * @author Jens Schauder
+ * @author Mark Paluch
  */
 @ExtendWith(MockitoExtension.class)
 class SimpleKeyValueRepositoryUnitTests {
@@ -108,7 +109,7 @@ void deleteEntity() {
 		repo.save(one);
 		repo.delete(one);
 
-		verify(opsMock, times(1)).delete(eq(one.getId()), eq(Foo.class));
+		verify(opsMock, times(1)).delete(eq(one));
 	}
 
 	@Test // DATACMNS-525