chore: fix JavaScript lint errors

PR-URL: #11068
Closes: #11065
Reviewed-by: Athan Reines <kgryte@gmail.com>

Author: Aniket-SS

lib/node_modules/@stdlib/stats/ztest/benchmark/benchmark.js

@@ -34,14 +34,12 @@ var ztest = require( './../lib' );
 bench( pkg, function benchmark( b ) {
 	var result;
 	var sigma;
-	var len;
 	var x;
 	var i;
 
-	x = new Array( 100 );
-	len = x.length;
-	for ( i = 0; i < len; i++ ) {
-		x[ i ] = randu()*50.0;
+	x = [];
+	for ( i = 0; i < 100; i++ ) {
+		x.push( randu()*50.0 );
 	}
 	sigma = stdev( 0.0, 50.0 );
 
@@ -65,14 +63,12 @@ bench( pkg+'::one-sided', function benchmark( b ) {
 	var result;
 	var sigma;
 	var opts;
-	var len;
 	var x;
 	var i;
 
-	x = new Array( 100 );
-	len = x.length;
-	for ( i = 0; i < len; i++ ) {
-		x[ i ] = randu()*50.0;
+	x = [];
+	for ( i = 0; i < 100; i++ ) {
+		x.push( randu()*50.0 );
 	}
 	opts = {
 		'alternative': 'less'
@@ -100,14 +96,12 @@ bench( pkg+':print', function benchmark( b ) {
 	var result;
 	var output;
 	var sigma;
-	var len;
 	var x;
 	var i;
 
-	x = new Array( 100 );
-	len = x.length;
-	for ( i = 0; i < len; i++ ) {
-		x[ i ] = randu()*50.0;
+	x = [];
+	for ( i = 0; i < 100; i++ ) {
+		x.push( randu()*50.0 );
 	}
 	sigma = stdev( 0.0, 50.0 );
 	result = ztest( x, sigma );