Fixed minor bugs

Author: avbasak1

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

@@ -123,7 +123,7 @@ public int compareTo(final Chromosome<P> another) {
      * @param another chromosome to compare
      * @return true if <code>another</code> is equivalent to this chromosome
      */
-    protected boolean isSame(final AbstractChromosome<P> another) {
+    public boolean isSame(final AbstractChromosome<P> another) {
         final P decodedChromosome = decode();
         final P otherDecodedChromosome = another.decode();
         return decodedChromosome.equals(otherDecodedChromosome);
@@ -141,22 +141,4 @@ public int hashCode() {
         return Objects.hash(decode());
     }
 
-    /** {@inheritDoc} */
-    @SuppressWarnings("unchecked")
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-        final AbstractChromosome<P> other = (AbstractChromosome<P>) obj;
-
-        return isSame(other);
-    }
-
 }