New Continuous Filament Mixer (#12098)

Marlin/src/gcode/gcode.h

@@ -146,8 +146,8 @@
  * M150 - Set Status LED Color as R<red> U<green> B<blue> P<bright>. Values 0-255. (Requires BLINKM, RGB_LED, RGBW_LED, NEOPIXEL_LED, or PCA9632).
  * M155 - Auto-report temperatures with interval of S<seconds>. (Requires AUTO_REPORT_TEMPERATURES)
  * M163 - Set a single proportion for a mixing extruder. (Requires MIXING_EXTRUDER)
- * M164 - Commit the mix (Req. MIXING_EXTRUDER) and optionally save as a virtual tool (Req. MIXING_VIRTUAL_TOOLS > 1)
- * M165 - Set the mix for a mixing extruder wuth parameters ABCDHI. (Requires MIXING_EXTRUDER and DIRECT_MIXING_IN_G1)
+ * M164 - Commit the mix (Req. MIXING_EXTRUDER) and optionally save as a virtual tool (Requires MIXING_EXTRUDER)
+ * M165 - Set the mix for a mixing extruder with parameters ABCDHI. (Requires MIXING_EXTRUDER and DIRECT_MIXING_IN_G1)
  * M190 - Sxxx Wait for bed current temp to reach target temp. ** Waits only when heating! **
  *        Rxxx Wait for bed current temp to reach target temp. ** Waits for heating or cooling. **
  * M200 - Set filament diameter, D<diameter>, setting E axis units to cubic. (Use S0 to revert to linear units.)
@@ -581,9 +581,7 @@ private:
 
   #if ENABLED(MIXING_EXTRUDER)
     static void M163();
-    #if MIXING_VIRTUAL_TOOLS > 1
-      static void M164();
-    #endif
+    static void M164();
     #if ENABLED(DIRECT_MIXING_IN_G1)
       static void M165();
     #endif