RFR: 8231491: JDI tc02x004 failed again due to wrong # of breakpoints

[Daniel D.Daugherty]

A trivial fix that deletes an errant `debugee.resume()` call that causes a race
between the debugger and debuggee. I've also corrected incorrect line number
values mentioned in comments.

This fix has been tested with the updated failing test both with and without the
debug code that makes the failure easy to reproduce. The real test will be seeing
if the failure stops reproducing in my stress testing runs on my M1 MacMini in
my lab.

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Commit messages:
 - 8231491.cr0.patch

Changes: https://git.openjdk.java.net/jdk/pull/9020/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9020&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8231491
  Stats: 5 lines in 2 files changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9020.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9020/head:pull/9020

PR: https://git.openjdk.java.net/jdk/pull/9020