RFR: CODETOOLS-7903254: Fix trailing whitespace in files

[Jonathan Gibbons]

Please review a scripted update to remove trailing white space from `make` and `test` files.


grep -rl ' $' open/make open/test | xargs sed -i .BAK -e 's/  *$//'

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Commit messages:
 - CODETOOLS-7903254: Fix trailing whitespace in files

Changes: https://git.openjdk.org/jtreg/pull/103/files
 Webrev: https://webrevs.openjdk.org/?repo=jtreg&pr=103&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903254
  Stats: 87 lines in 40 files changed: 0 ins; 0 del; 87 mod
  Patch: https://git.openjdk.org/jtreg/pull/103.diff
  Fetch: git fetch https://git.openjdk.org/jtreg pull/103/head:pull/103

PR: https://git.openjdk.org/jtreg/pull/103