test_strcoll, test_strcoll_with_diacritic, test_strxfrm and test_strxfrm_with_diacritic

were accidentally skipped due to a wrongly returned encoding name. Now they are failing.

Author: tomasstupka

graalpython/com.oracle.graal.python.test/src/tests/unittest_tags/test_locale.txt

@@ -14,10 +14,6 @@
 *graalpython.lib-python.3.test.test_locale.TestCDelocalizeTest.test_delocalize
 *graalpython.lib-python.3.test.test_locale.TestCNumberFormatting.test_grouping
 *graalpython.lib-python.3.test.test_locale.TestCNumberFormatting.test_grouping_and_padding
-*graalpython.lib-python.3.test.test_locale.TestEnUSCollation.test_strcoll
-*graalpython.lib-python.3.test.test_locale.TestEnUSCollation.test_strcoll_with_diacritic
-*graalpython.lib-python.3.test.test_locale.TestEnUSCollation.test_strxfrm
-*graalpython.lib-python.3.test.test_locale.TestEnUSCollation.test_strxfrm_with_diacritic
 *graalpython.lib-python.3.test.test_locale.TestEnUSDelocalize.test_atof
 *graalpython.lib-python.3.test.test_locale.TestEnUSDelocalize.test_atoi
 *graalpython.lib-python.3.test.test_locale.TestEnUSDelocalize.test_delocalize