Remove unused import for Function in BiFunctionClassMap

Author: lm-sousa

SpecsUtils/src/pt/up/fe/specs/util/classmap/BiFunctionClassMap.java

@@ -17,7 +17,6 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.function.BiFunction;
-import java.util.function.Function;
 
 import pt.up.fe.specs.util.exceptions.NotImplementedException;
 import pt.up.fe.specs.util.utilities.ClassMapper;