RFR: JDK-8273808: Cleanup AddFontsToX11FontPath

[Matthias Baesken]

Hello please review this small cleanup change.  Seems AddFontsToX11FontPath from fontpath.c is unused/unreferenced and can be removed.

Thanks, Matthias

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Commit messages:
 - JDK-8273808

Changes: https://git.openjdk.java.net/jdk/pull/5532/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5532&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273808
  Stats: 135 lines in 1 file changed: 0 ins; 134 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5532.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5532/head:pull/5532

PR: https://git.openjdk.java.net/jdk/pull/5532