RFR: 8166050: partialArray is not created in javax.swing.text.html.parser.NPrintWriter.println(...) method

[Prasanta Sadhukhan]

The uninitialized "partialArray" in NPrintWriter.println() can cause NPE in System.arraycopy . 
But it is seen that NPrintWriter class embedded in TagStack class file cannot be used by application as it is not a public class and not an inner class too and also there's no object of it created in TagStack class to access NPrintWriter and there's no instances of accessing NPrintWriter in jdk.
So, it seems prudent to remove instead of fixing this ununsed, unaccessible class . Build and jtreg tests are ok.

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Commit messages:
 - 8166050: partialArray is not created in javax.swing.text.html.parser.NPrintWriter.println(...) method

Changes: https://git.openjdk.java.net/jdk/pull/7332/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7332&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8166050
  Stats: 40 lines in 1 file changed: 0 ins; 40 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7332.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7332/head:pull/7332

PR: https://git.openjdk.java.net/jdk/pull/7332