diff --git a/src/Toolkit.js b/src/Toolkit.js
index ba06a33..b38e504 100644
--- a/src/Toolkit.js
+++ b/src/Toolkit.js
@@ -184,46 +184,6 @@ Ext.apply(Ext.form.field.VTypes, {
     },
 });
 
-Ext.define('EXTJS_18900.Pie', {
-    override: 'Ext.chart.series.Pie',
-
-    // from 6.0.2
-    betweenAngle: function(x, a, b) {
-        let pp = Math.PI * 2,
-            offset = this.rotationOffset;
-
-        if (a === b) {
-            return false;
-        }
-
-        if (!this.getClockwise()) {
-            x *= -1;
-            a *= -1;
-            b *= -1;
-            a -= offset;
-            b -= offset;
-        } else {
-            a += offset;
-            b += offset;
-        }
-
-        x -= a;
-        b -= a;
-
-        // Normalize, so that both x and b are in the [0,360) interval.
-        x %= pp;
-        b %= pp;
-        x += pp;
-        b += pp;
-        x %= pp;
-        b %= pp;
-
-        // Because 360 * n angles will be normalized to 0,
-        // we need to treat b === 0 as a special case.
-        return x < b || b === 0;
-    },
-});
-
 // we always want the number in x.y format and never in, e.g., x,y
 Ext.define('PVE.form.field.Number', {
     override: 'Ext.form.field.Number',