RFR: 8281400: Remove unused wcslen() function [v2]

[Harold Seigel]

> Please review this small change to remove the unused wcslen() function.  This change was tested by running Mach5 tiers 1-2 on Linux, Mac OS, and Windows.
> 
> Thanks, Harold

Harold Seigel has updated the pull request incrementally with one additional commit since the last revision:

  globalDefinitions_xlc.hpp change

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7374/files
  - new: https://git.openjdk.java.net/jdk/pull/7374/files/82015268..4c3375ce

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7374&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7374&range=00-01

  Stats: 5 lines in 1 file changed: 0 ins; 4 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7374.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7374/head:pull/7374

PR: https://git.openjdk.java.net/jdk/pull/7374