RFR: 8333477: Delete extra empty spaces in Makefiles [v2]

[SendaoYan]

> Hi all,
>   This PR several extra empty spaces and extra empty lines in several Makefiles. It's trivial fix, no risk.
> 
> Thanks.

SendaoYan has updated the pull request incrementally with one additional commit since the last revision:

  delete extra empty trailing blank line in test/jdk/java/rmi/reliability/benchmark/bench/Makefile

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/19537/files
  - new: https://git.openjdk.org/jdk/pull/19537/files/0d2be363..e80b98da

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19537&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19537&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/19537.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19537/head:pull/19537

PR: https://git.openjdk.org/jdk/pull/19537