[NEMO-412] Address Sonar Cloud issue for MemoryChunk (apache#233)

JIRA: [NEMO-412: Address Sonar Cloud issue for MemoryChunk](https://issues.apache.org/jira/projects/NEMO/issues/NEMO-412)

**Major changes:**
- `checkIndex()` in `MemoryChunk` is fixed to return either true or false.

**Minor changes to note:**
- None

Closes apache#233

runtime/executor/src/main/java/org/apache/nemo/runtime/executor/data/MemoryChunk.java

@@ -451,12 +451,8 @@ public final void putDouble(final int index, final double value) {
     putLong(index, Double.doubleToRawLongBits(value));
   }
 
-  private boolean checkIndex(final int index, final long pos, final int typeSize) throws IndexOutOfBoundsException {
-    if (!(index >= 0 && pos <= addressLimit - typeSize)) {
-      throw new IndexOutOfBoundsException();
-    } else {
-      return true;
-    }
+  private boolean checkIndex(final int index, final long pos, final int typeSize) {
+    return (index >= 0 && pos <= (addressLimit - typeSize));
   }
 
   @SuppressWarnings("restriction")