Update test, casting of resulting array is no longer necessary

packages/array-partition/index.tests.ts

@@ -2,7 +2,7 @@ import partition from './index';
 
 // OK
 const test1: [number[], number[]] = partition([1, 5, 2, 4, 3], n => n > 3);
-const test2: [string[], number[]] = partition(['a', 2, 3, '3'], x => typeof x == 'string') as [string[], number[]]; //if you know better than typescript
+const test2: [string[], number[]] = partition(['a', 2, 3, '3'], x => typeof x == 'string');
 const test3: [number[], number[]] = partition([1, 2, 3, 4], x => typeof x == 'string');
 const test4: [unknown[], unknown[]] = partition([], n => n > 3); // [[], []]