[Performance][Php55] Remove regex replace e on RegexMatcher (#4974)

rules/Php55/RegexMatcher.php

@@ -87,7 +87,7 @@ private function resolveModifiers(string $modifiersCandidate): string
 
     private function createPatternWithoutE(string $pattern, string $delimiter, string $modifiers): string
     {
-        $modifiersWithoutE = Strings::replace($modifiers, '#e#');
+        $modifiersWithoutE = str_replace('e', '', $modifiers);
 
         return Strings::before($pattern, $delimiter, -1) . $delimiter . $modifiersWithoutE;
     }