revert: restore original BigInt assertions in napi/create-int64 and napi/create-uint64 native tests

The lib/native.js wrapper already coerces the addon return value via
Number(), so the prior strictEqual was sound. Drop the redundant
Number() coercion and the unused @stdlib/number/ctor import.

Author: claude

lib/node_modules/@stdlib/napi/create-int64/test/test.native.js

@@ -22,7 +22,6 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var Number = require( '@stdlib/number/ctor' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
 
@@ -79,7 +78,7 @@ tape( 'the function does not throw an error if provided a number', opts, functio
 	];
 	for ( i = 0; i < values.length; i++ ) {
 		v = addon( values[ i ] );
-		t.strictEqual( Number( v ), values[ i ], 'returns expected value when provided '+values[ i ] );
+		t.strictEqual( v, values[ i ], 'returns expected value when provided '+values[ i ] );
 	}
 	t.end();
 });

lib/node_modules/@stdlib/napi/create-uint64/test/test.native.js

@@ -22,7 +22,6 @@
 
 var resolve = require( 'path' ).resolve;
 var tape = require( 'tape' );
-var Number = require( '@stdlib/number/ctor' );
 var tryRequire = require( '@stdlib/utils/try-require' );
 
 
@@ -79,7 +78,7 @@ tape( 'the function does not throw an error if provided a non-negative number',
 	];
 	for ( i = 0; i < values.length; i++ ) {
 		v = addon( values[ i ] );
-		t.strictEqual( Number( v ), values[ i ], 'returns expected value when provided '+values[ i ] );
+		t.strictEqual( v, values[ i ], 'returns expected value when provided '+values[ i ] );
 	}
 	t.end();
 });