Commit e5db83d7db introduced a change to the file updated by this patch
which caused a build-time warning about unused variable. This patch
removes declaration of the variable from the code.
This patch also updates comment that relates to what was changed
in the commit.
Patch was tested by building breadxavr:nsh - resulting binary is identical
(by SHA256 checksum) and the warning is no longer present.
Signed-off-by: Kerogit <kr.git@kerogit.eu>
0a8be84033