bench: remove duplicated logic

Signed-off-by: Philipp Burckhardt <[email protected]>

Author: Planeshifter

lib/node_modules/@stdlib/stats/base/dists/chi/logpdf/benchmark/benchmark.js

@@ -73,7 +73,6 @@ bench( pkg+':factory', function benchmark( b ) {
 
 	k = 10.0;
 	mylogpdf = logpdf.factory( k );
-	x = uniform( 100, -2.0, 2.0 );
 
 	b.tic();
 	for ( i = 0; i < b.iterations; i++ ) {