Remove check for the DISPLAY environment variable. It's easier to use the `-x' option to get an X window than to temporarily disable DISPLAY.
Remove check for the DISPLAY environment variable. It's easier to use
the `-x' option to get an X window than to temporarily disable DISPLAY.

PR:		32180

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase