fix tests

Author: smalyshev

ext/standard/tests/general_functions/bug60227_2.phpt

@@ -12,4 +12,4 @@ echo 'foo';
 Warning: Header may not contain more than a single header, new line detected in %s on line %d
 foo
 --EXPECTHEADERS--
-Content-type: text/html; charset=UTF-8
+Content-type: text/html

ext/standard/tests/general_functions/bug60227_3.phpt

@@ -11,4 +11,4 @@ echo 'foo';
 Warning: Header may not contain NUL bytes in %s on line %d
 foo
 --EXPECTHEADERS--
-Content-type: text/html; charset=UTF-8
+Content-type: text/html

ext/standard/tests/general_functions/bug60227_4.phpt

@@ -11,4 +11,4 @@ echo 'foo';
 Warning: Header may not contain more than a single header, new line detected in %s on line %d
 foo
 --EXPECTHEADERS--
-Content-type: text/html; charset=UTF-8
+Content-type: text/html