removed superfluous 'neutral' centroid

Neutral is included as an 'origin' field. This is partly because emoml has no vocab for "Neutral" in dimensional models.

senpy/plugins/conversion/emotion/ekman2vad.senpy

@@ -30,10 +30,6 @@ centroids:
     A: 5.21
     D: 2.82
     V: 2.21
-  neutral:
-    A: 5.00
-    D: 2.00
-    V: 5.00
 centroids_direction:
   - emoml:big6
   - emoml:pad
@@ -45,4 +41,4 @@ aliases: # These are aliases for any key in the centroid, to avoid repeating a l
   disgust: emoml:big6disgust
   fear: emoml:big6fear
   happiness: emoml:big6happiness
-  sadness: emoml:big6sadness
+  sadness: emoml:big6sadness