RFR: 8305442: (bf) Direct and view implementations of CharBuffer.toString(int, int) do not need to catch SIOBE

[Sergey Tsypanov]

8305442: (bf) Direct and view implementations of CharBuffer.toString(int, int) do not need to catch SIOBE

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Commit messages:
 - Drop redundant catch of never-happening SIOOBE

Changes: https://git.openjdk.org/jdk/pull/13286/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13286&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305442
  Stats: 25 lines in 2 files changed: 0 ins; 8 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/13286.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13286/head:pull/13286

PR: https://git.openjdk.org/jdk/pull/13286