deroff: Remove roff and preprocessor constructs

    2013-09-15 06:41           0 usr/
    2013-09-15 06:41           0 usr/bin/
    2013-09-15 06:41      112640 usr/bin/deroff.exe
    2013-09-15 06:41           0 usr/share/
    2013-09-15 06:41           0 usr/share/doc/
    2013-09-15 06:41           0 usr/share/doc/Cygwin/
    2013-09-15 06:41        1237 usr/share/doc/Cygwin/deroff.README
    2013-09-15 06:41           0 usr/share/man/
    2013-09-15 06:41           0 usr/share/man/man1/
    2013-09-15 06:41         671 usr/share/man/man1/deroff.1.gz