RFR: 8285097: Duplicate XML keys in XPATHErrorResources.java and XSLTErrorResources.java

[Shruthi]

Removing the Duplicate keys present in XSLTErrorResources.java and XPATHErrorResources.java

The bug report for the same: https://bugs.openjdk.java.net/browse/JDK-8285097

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Commit messages:
 - Removing Duplicate keys present in XSLTErrorResources.java and XPATHErrorResources.java

Changes: https://git.openjdk.java.net/jdk/pull/8318/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8318&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8285097
  Stats: 7 lines in 2 files changed: 0 ins; 6 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8318.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8318/head:pull/8318

PR: https://git.openjdk.java.net/jdk/pull/8318