Fix CipherClientTests

Remove the `cleanup` function that deletes all ciphertexts, since the account is deleted, so they are deleted anyway.

This causes an issue because (I guess) the function runs when the account is deleted.

client/src/test/kotlin/dev/medzik/librepass/client/api/CipherClientTests.kt

@@ -29,19 +29,6 @@ class CipherClientTests {
             Thread.sleep(1000)
         }
 
-        @AfterAll
-        @JvmStatic
-        fun cleanup() {
-            val authClient = AuthClient(API_URL)
-            val credentials = authClient.login(EMAIL, PASSWORD)
-
-            val cipherClient = CipherClient(credentials.apiKey, API_URL)
-
-            cipherClient.getAll().forEach {
-                cipherClient.delete(it.id)
-            }
-        }
-
         @AfterAll
         @JvmStatic
         fun delete() {