bench: fix call signature

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
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    status: passed
  - task: lint_editorconfig
    status: passed
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    status: na
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    status: na
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    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
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  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
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  - task: lint_javascript_benchmarks
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  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: passed
  - task: lint_c_tests_fixtures
    status: na
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  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/ndarray/ctor/benchmark/c/benchmark.c

@@ -3271,7 +3271,6 @@ static double benchmark66( void ) {
 static double benchmark67( void ) {
 	double elapsed;
 	int64_t v;
-	int64_t j;
 	double t;
 	int i;
 
@@ -3291,8 +3290,7 @@ static double benchmark67( void ) {
 
 	t = tic();
 	for ( i = 0; i < ITERATIONS; i++ ) {
-		j = (int64_t)( rand_double()*ndims );
-		v = stdlib_ndarray_offset_elements( arr, j );
+		v = stdlib_ndarray_offset_elements( arr );
 		if ( v != offset ) {
 			printf( "unexpected result\n" );
 			break;