RFR: 8066694: Strange code in JavacParser.java

[Andrey Turbanov]

This code was introduced in main repository under https://bugs.openjdk.java.net/browse/JDK-8006775
I checked original commit in `type-annotations/langtools` repository: https://hg.openjdk.java.net/type-annotations/type-annotations/langtools/rev/71f35e4b93a5
Looks like it's not a merge problem.

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

Commit messages:
 - 8066694: Strange code in JavacParser.java

Changes: https://git.openjdk.java.net/jdk/pull/1852/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1852&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8066694
  Stats: 7 lines in 1 file changed: 0 ins; 4 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1852.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1852/head:pull/1852

PR: https://git.openjdk.java.net/jdk/pull/1852