drop sieve parser from sievescripts branch

dev/Sieve/Extensions/rfc5173.js

@@ -1,48 +0,0 @@
-/**
- * https://tools.ietf.org/html/rfc5173
- */
-
-(Sieve => {
-
-const Grammar = Sieve.Grammar;
-
-class Body extends Grammar.Test
-{
-	constructor()
-	{
-		super('body');
-		this.body_transform = ''; // :raw, :content <string-list>, :text
-		this.key_list = new Grammar.StringList;
-	}
-
-	get require() { return 'body'; }
-
-	toString()
-	{
-		return 'body'
-			+ (this.comparator ? ' :comparator ' + this.comparator : '')
-			+ ' ' + this.match_type
-			+ ' ' + this.body_transform
-			+ ' ' + this.key_list.toString();
-	}
-
-	pushArguments(args)
-	{
-		args.forEach((arg, i) => {
-			if (':raw' === arg || ':text' === arg) {
-				this.body_transform = arg;
-			} else if (arg instanceof Grammar.StringList || arg instanceof Grammar.StringType) {
-				if (':content' === args[i-1]) {
-					this.body_transform = ':content ' + arg;
-				} else {
-					this[args[i+1] ? 'content_list' : 'key_list'] = arg;
-				}
-			}
-		});
-	}
-}
-
-Sieve.Commands.body = Body;
-
-})(this.Sieve);
-