Bug 576251 - cleanup JDIThread code before functional changes

- removed meaningless comments
- removed redundand inits
- removed unneeded casts

Change-Id: I71173072439d46c8064be9813dce263255de51c3
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/jdt/eclipse.jdt.debug/+/185808
Tested-by: JDT Bot <jdt-bot@eclipse.org>
1 file changed