[xmp] Minor cleanup in help text

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>

src/options.c

@@ -82,34 +82,23 @@ static void usage(char *s)
 	printf("\nPlayer control options:\n"
 	       "   -D parameter[=val]     Pass configuration parameter to the output driver\n"
 	       "   -d --driver name       Force output to the specified device\n"
-	       "   --fix-sample-loops     Use sample loop start /2 in MOD/UNIC/NP3\n"
 	       "   --offset-bug-emulation Emulate Protracker 2.x bug in effect 9\n"
 	       "   -l --loop              Enable module looping\n"
 	       "   -M --mute ch-list      Mute the specified channels\n"
-	       "   --nocmd                Disable interactive commands\n"
-	       "   --norc                 Don't read configuration files\n"
 	       "   -R --random            Random order playing\n"
-#ifdef HAVE_SYS_RTPRIO_H
-	       "   --realtime             Run in real-time priority\n"
-#endif
 	       "   -S --solo ch-list      Set channels to solo mode\n"
 	       "   -s --start num         Start from the specified order\n"
-	       "   -T --tempo num         Initial tempo (default 6)\n"
 	       "   -t --time num          Maximum playing time in seconds\n"
-	       "   --vblank               Force vblank timing in Amiga modules (no CIA)\n"
 	       "\nPlayer sound options:\n"
 	       "   -8 --8bit              Convert 16 bit samples to 8 bit\n"
 	       "   -m --mono              Mono output\n"
 	       "   -P --pan pan           Percentual pan amplitude\n"
-	       "   -r --reverse           Reverse left/right stereo channels\n"
-	       "   --stereo               Stereo output\n"
 	       "\nSoftware mixer options:\n"
 	       "   -a --amplify {0|1|2|3} Amplification factor: 0=Normal, 1=x2, 2=x4, 3=x8\n"
 	       "   -b --bits {8|16}       Software mixer resolution (8 or 16 bits)\n"
 	       "   -c --stdout            Mix the module to stdout\n"
 	       "   -F --click-filter      Apply low pass filter to reduce clicks\n"
 	       "   -f --frequency rate    Sampling rate in hertz (default 44100)\n"
-	       "   -n --nearest           Use nearest neighbor interpolation\n"
 	       "   -o --output-file name  Mix the module to file ('-' for stdout)\n"
 	       "   -u --unsigned          Set the mixer to use unsigned samples\n"
 	       "\nEnvironment options:\n"