RFR: 8276266: Clean up incorrect client-libs ProblemList.txt entries

[Phil Race]

We have a few stale entries in the Problem list.
We need to remap some tests to still open bugs
7100044 -> 6849371
8203047 -> 8072110
8233703 -> 8238436

We need to remove these FIXED bugs
java/awt/Choice/ChoiceKeyEventReaction/ChoiceKeyEventReaction.java 7185258 macosx-all

java/awt/GridLayout/LayoutExtraGaps/LayoutExtraGaps.java 8000171 windows-all
(actually closed as a dup of 8196100 which is fixed)

And this RESOLVED / not reproducible.
 java/awt/SplashScreen/MultiResolutionSplash/MultiResolutionSplashTest.java 8061235 macosx-all

I've verified that the removed ones do pass in the CI test system so we should be OK unless they are very intermittent or environment specific

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Commit messages:
 - 8276266: Clean up incorrect client-libs ProblemList.txt entries

Changes: https://git.openjdk.java.net/jdk/pull/6203/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6203&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276266
  Stats: 6 lines in 1 file changed: 0 ins; 3 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6203.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6203/head:pull/6203

PR: https://git.openjdk.java.net/jdk/pull/6203