fix: remove useless import and add test-case (type-challenges#9900)

* fix: remove useless import

* fix(4484): add a test-case

Author: JiatLn

questions/03188-medium-tuple-to-nested-object/test-cases.ts

@@ -1,5 +1,4 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 type cases = [
   Expect<Equal<TupleToNestedObject<['a'], string>, { a: string }>>,

questions/03192-medium-reverse/test-cases.ts

@@ -1,7 +1,7 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 type cases = [
+  Expect<Equal<Reverse<[]>, []>>,
   Expect<Equal<Reverse<['a', 'b']>, ['b', 'a']>>,
   Expect<Equal<Reverse<['a', 'b', 'c']>, ['c', 'b', 'a']>>,
 ]

questions/03196-medium-flip-arguments/test-cases.ts

@@ -1,5 +1,4 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 type cases = [
   Expect<Equal<FlipArguments<() => boolean>, () => boolean>>,

questions/03243-medium-flattendepth/test-cases.ts

@@ -1,5 +1,4 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 type cases = [
   Expect<Equal<FlattenDepth<[]>, []>>,

questions/03376-medium-inordertraversal/test-cases.ts

@@ -1,5 +1,4 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 const tree1 = {
   val: 1,

questions/04484-medium-istuple/test-cases.ts

@@ -1,10 +1,10 @@
 import type { Equal, Expect } from '@type-challenges/utils'
-import { ExpectFalse, NotEqual } from '@type-challenges/utils'
 
 type cases = [
   Expect<Equal<IsTuple<[]>, true>>,
   Expect<Equal<IsTuple<[number]>, true>>,
   Expect<Equal<IsTuple<readonly [1]>, true>>,
   Expect<Equal<IsTuple<{ length: 1 }>, false>>,
   Expect<Equal<IsTuple<number[]>, false>>,
+  Expect<Equal<IsTuple<never>, false>>,
 ]