test: remove isnan checks from test.main.js

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - 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: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---

Author: impawstarlight

lib/node_modules/@stdlib/number/int32/base/muldw/test/test.main.js

@@ -21,7 +21,6 @@
 // MODULES //
 
 var tape = require( 'tape' );
-var isnan = require( '@stdlib/math/base/assert/is-nan' );
 var imuldw = require( './../lib/main.js' );
 
 
@@ -38,24 +37,6 @@ tape( 'main export is a function', function test( t ) {
 	t.end();
 });
 
-tape( 'the function returns `NaN` if provided `NaN`', function test( t ) {
-	var v;
-
-	v = imuldw( NaN, 1 );
-	t.strictEqual( isnan( v[0] ), true, 'returns expected value' );
-	t.strictEqual( isnan( v[1] ), true, 'returns expected value' );
-
-	v = imuldw( 1, NaN );
-	t.strictEqual( isnan( v[0] ), true, 'returns expected value' );
-	t.strictEqual( isnan( v[1] ), true, 'returns expected value' );
-
-	v = imuldw( NaN, NaN );
-	t.strictEqual( isnan( v[0] ), true, 'returns expected value' );
-	t.strictEqual( isnan( v[1] ), true, 'returns expected value' );
-
-	t.end();
-});
-
 tape( 'the function computes the double word product of two (signed) words', function test( t ) {
 	var expected;
 	var actual;