RFR: 7008363: TEST_BUG: test/java/lang/StringCoding/CheckEncodings.sh does nothing and is very slow at that

[Naoto Sato]

Removing a problem-listed test case, which has little value in itself. Confirmed it did succeed on all platforms before the removal.

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Commit messages:
 - 7008363: TEST_BUG: test/java/lang/StringCoding/CheckEncodings.sh does nothing and is very slow at that

Changes: https://git.openjdk.java.net/jdk/pull/5996/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5996&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-7008363
  Stats: 96 lines in 3 files changed: 0 ins; 96 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5996.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5996/head:pull/5996

PR: https://git.openjdk.java.net/jdk/pull/5996