Revert "Icinga\Protocol\File\FileReader: implement Icinga\Data\Selectable, ...\Fetchable and Countable"

This reverts commit 7edbb8f27216e6faa0d0dc5a71b407748e9dd535.

library/Icinga/Protocol/File/FileReader.php

@@ -4,15 +4,12 @@
 
 namespace Icinga\Protocol\File;
 
-use Icinga\Data\Fetchable;
-use Icinga\Data\Selectable;
-use Countable;
 use Zend_Config;
 
 /**
  * Read file line by line
  */
-class FileReader implements Selectable, Fetchable, Countable
+class FileReader
 {
     /**
      * A PCRE string with the fields to extract from the file's lines as named subpatterns