RFR: 8250914: Matcher::stack_direction() is unused

[Roberto Castañeda Lozano]

Remove unused `Matcher::stack_direction()` together with related ADL entries and
ADLC support.

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Commit messages:
 - Matcher::stack_direction() is unused

Changes: https://git.openjdk.java.net/jdk/pull/125/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=125&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8250914
  Stats: 44 lines in 11 files changed: 0 ins; 44 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/125.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/125/head:pull/125

PR: https://git.openjdk.java.net/jdk/pull/125