Update composer dependencies

Signed-off-by: Tom Van Herreweghe <[email protected]>

Author: Miljar

composer.json

@@ -13,7 +13,6 @@
     "keywords": ["EXIF", "IPTC", "jpeg", "tiff", "exiftool"],
     "require": {
         "php": "^5.6 || ^7.0",
-        "ext-exif": "*",
         "miljar/php-exif-common": "dev-develop"
     },
     "require-dev": {