test_text_cleaners: don't re-invent assertions

pytest does treat assert special and does a better job w.r.t error reporting

tests/test_text_cleaners.py

@@ -1,24 +1,16 @@
 #!/usr/bin/env python3
 
 from TTS.tts.utils.text.cleaners import english_cleaners, phoneme_cleaners
-from typing import Any
-
-
-def assert_equal(actual: Any, expected: Any) -> None:
-    assert actual == expected, f"\n{actual} \n vs \n{expected}"
 
 
 def test_time() -> None:
-    assert_equal(english_cleaners("It's 11:00"), "it's eleven a m")
-    assert_equal(english_cleaners("It's 9:01"), "it's nine oh one a m")
-    assert_equal(english_cleaners("It's 16:00"), "it's four p m")
-    assert_equal(english_cleaners("It's 00:00 am"), "it's twelve a m")
+    assert english_cleaners("It's 11:00") == "it's eleven a m"
+    assert english_cleaners("It's 9:01") == "it's nine oh one a m"
+    assert english_cleaners("It's 16:00") == "it's four p m"
+    assert english_cleaners("It's 00:00 am") == "it's twelve a m"
 
 
 def test_currency() -> None:
-    assert_equal(phoneme_cleaners("It's $10.50"),
-                 "It's ten dollars fifty cents")
-    assert_equal(phoneme_cleaners("£1.1"),
-                 "one pound sterling one penny")
-    assert_equal(phoneme_cleaners("¥1"),
-                 "one yen")
+    assert phoneme_cleaners("It's $10.50") == "It's ten dollars fifty cents"
+    assert phoneme_cleaners("£1.1") == "one pound sterling one penny"
+    assert phoneme_cleaners("¥1") == "one yen"