Remove unused mimetype detection method in OC_Image

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

lib/private/legacy/image.php

@@ -62,22 +62,6 @@ class OC_Image implements \OCP\IImage {
 	/** @var array */
 	private $exif;
 
-	/**
-	 * Get mime type for an image file.
-	 *
-	 * @param string|null $filePath The path to a local image file.
-	 * @return string The mime type if the it could be determined, otherwise an empty string.
-	 */
-	static public function getMimeTypeForFile($filePath) {
-		// exif_imagetype throws "read error!" if file is less than 12 byte
-		if ($filePath !== null && filesize($filePath) > 11) {
-			$imageType = exif_imagetype($filePath);
-		} else {
-			$imageType = false;
-		}
-		return $imageType ? image_type_to_mime_type($imageType) : '';
-	}
-
 	/**
 	 * Constructor.
 	 *

tests/lib/ImageTest.php

@@ -19,20 +19,6 @@ class ImageTest extends \Test\TestCase {
 		parent::tearDownAfterClass();
 	}
 
-	public function testGetMimeTypeForFile() {
-		$mimetype = \OC_Image::getMimeTypeForFile(OC::$SERVERROOT.'/tests/data/testimage.png');
-		$this->assertEquals('image/png', $mimetype);
-
-		$mimetype = \OC_Image::getMimeTypeForFile(OC::$SERVERROOT.'/tests/data/testimage.jpg');
-		$this->assertEquals('image/jpeg', $mimetype);
-
-		$mimetype = \OC_Image::getMimeTypeForFile(OC::$SERVERROOT.'/tests/data/testimage.gif');
-		$this->assertEquals('image/gif', $mimetype);
-
-		$mimetype = \OC_Image::getMimeTypeForFile(null);
-		$this->assertEquals('', $mimetype);
-	}
-
 	public function testConstructDestruct() {
 		$img = new \OC_Image(OC::$SERVERROOT.'/tests/data/testimage.png');
 		$this->assertInstanceOf('\OC_Image', $img);
@@ -337,7 +323,6 @@ class ImageTest extends \Test\TestCase {
 		$tempFile = tempnam(sys_get_temp_dir(), 'img-test');
 
 		$img->save($tempFile, $mimeType);
-		$actualMimeType = \OC_Image::getMimeTypeForFile($tempFile);
-		$this->assertEquals($mimeType, $actualMimeType);
+		$this->assertEquals($mimeType, image_type_to_mime_type(exif_imagetype($tempFile)));
 	}
 }