Remove check for constructor parameter names.

For Kotlin constructors and possibly others parameters maybe unnamed and still work with our infrastructure.

Closes spring-projects#1762

Author: schauder

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/mapping/JdbcMappingContext.java

@@ -69,10 +69,6 @@ protected <T> RelationalPersistentEntity<T> createPersistentEntity(TypeInformati
 			return entity;
 		}
 
-		for (Parameter<Object, RelationalPersistentProperty> parameter : creator.getParameters()) {
-			Assert.state(StringUtils.hasText(parameter.getName()), () -> String.format(MISSING_PARAMETER_NAME, parameter));
-		}
-
 		return entity;
 	}