fix: Added @Ignore to the tests

exercises/practice/crypto-square/src/test/kotlin/CryptoSquareTest.kt

@@ -1,6 +1,6 @@
+import kotlin.test.Ignore
 import kotlin.test.Test
 import kotlin.test.assertEquals
-import kotlin.test.assertFailsWith
 
 class CryptoSquareTest {
 
@@ -11,41 +11,47 @@ class CryptoSquareTest {
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `letters are lower cased during encryption`() {
         val plaintext = "A"
         val expectedOutput = "a"
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `spaces are removed during encryption`() {
         val plaintext = " b "
         val expectedOutput = "b"
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `punctuation is removed during encryption`() {
         val plaintext = "@1,%!"
         val expectedOutput = "1"
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `nine character plaintext results in three chunks of three characters`() {
         val plaintext = "This is fun!"
         val expectedOutput = "tsf hiu isn"
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `eight character plaintext results in three chunks with a trailing space`() {
         val plaintext = "Chill out."
         val expectedOutput = "clu hlt io "
         assertEquals(expectedOutput, CryptoSquare.ciphertext(plaintext))
     }
 
+    @Ignore
     @Test
     fun `fifty four character plaintext results in seven chunks with trailing spaces`() {
         val plaintext = "If man was meant to stay on the ground, god would have given us roots."