Wine expected when running networkSimulator_g192 as part of self_test.py in WSL

In self_test.py we have:

if proc_cmd[0] == "networkSimulator_g192":
suffix = "nws"

if suffix == "nws" and TOOLS_DIR == TOOLS_DIR_LINUX:
# use wine
proc_cmd[0] = os.path.join(TOOLS_DIR_WIN, "networkSimulator_g192.exe")
proc_cmd = ["wine"] + proc_cmd

When running self_test.py in WSL it stops in the first condition containing "networkSimulator_g192" with an error message saying that "wine" is not installed. As we now have the Linux binary, the above four lines are obsolete and shall be removed.