Remove write methos on BitSet

Signed-off-by: Francisco Rodriguez Elorza <francisco.rodriguez.elorza@oracle.com>

runtime/JavaScript/src/antlr4/misc/BitSet.d.ts

@@ -1,17 +1,9 @@
 export declare class BitSet {
-    private data: Uint32Array;
+    // write methods are not exposed based on this conversation https://github.com/antlr/antlr4/pull/4731#discussion_r1847139040
     readonly length: number;
-
-    constructor();
-
-    set(index: number): void;
 
     get(index: number): number;
 
-    clear(index: number): void;
-
-    or(set: BitSet): void;
-
     values(): Array<number>;
 
     minValue(): number;
@@ -22,9 +14,5 @@ export declare class BitSet {
 
     toString(): string;
 
-    _resize(index: number): void;
-
-    static _checkIndex(index: number): void;
-
     static _bitCount(l: number): number; 
 }