removed hashcode

Author: avbasak1

commons-math4-genetics/src/main/java/org/apache/commons/math4/genetics/chromosome/AbstractChromosome.java

@@ -16,8 +16,6 @@
  */
 package org.apache.commons.math4.genetics.chromosome;
 
-import java.util.Objects;
-
 import org.apache.commons.math4.genetics.decoder.Decoder;
 import org.apache.commons.math4.genetics.fitness.FitnessFunction;
 import org.apache.commons.math4.genetics.utils.ValidationUtils;
@@ -135,10 +133,4 @@ public String toString() {
         return String.format("(f=%s %s)", evaluate(), decode());
     }
 
-    /** {@inheritDoc} */
-    @Override
-    public int hashCode() {
-        return Objects.hash(decode());
-    }
-
 }