Fix: remove unused lookbehind pattern

src/locales/en/parsers/ENCasualDateParser.ts

@@ -5,8 +5,7 @@ import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/
 import { assignSimilarDate } from "../../../utils/dayjs";
 import * as references from "../../../common/casualReferences";
 
-const PATTERN =
-    /(now|today|tonight|tomorrow|tmr|tmrw|yesterday|last\s*night|(?<!\d\s*)day\s*after\s*tomorrow|(?<!\d\s*)day\s*before\s*yesterday)(?=\W|$)/i;
+const PATTERN = /(now|today|tonight|tomorrow|tmr|tmrw|yesterday|last\s*night)(?=\W|$)/i;
 
 export default class ENCasualDateParser extends AbstractParserWithWordBoundaryChecking {
     innerPattern(context: ParsingContext): RegExp {
@@ -45,15 +44,6 @@ export default class ENCasualDateParser extends AbstractParserWithWordBoundaryCh
                     assignSimilarDate(component, targetDate);
                     component.imply("hour", 0);
                 }
-
-                if (lowerText.match(/after\s*tomorrow/)) {
-                    return references.theDayAfter(context.reference, 2);
-                }
-
-                if (lowerText.match(/before\s*yesterday/)) {
-                    return references.theDayBefore(context.reference, 2);
-                }
-
                 break;
         }