Revert "Add getCell and getRandomCell methods"

This reverts commit adebe1542e.

src/main/java/CellSample.java

@@ -49,13 +49,6 @@ public class CellSample {
         return cells;
     }
 
-    public String[] getCell(Integer n) { return cells.get(n); };
-
-    public String[] getRandomCell() {
-        int n = BiGpairSEQ.getRand().nextInt(cells.size());
-        return getCell(n);
-    }
-
     public Integer getCdr1Freq() {
         return cdr1Freq;
     }