Reduce EXIF test image sizes, there is still one large image left that I will look into reducing if possible (bug50845.jpg)

The changes in phpts are due to exiftool, I verified that all the images still remain relevant for testing

Author: KalleZ

ext/exif/tests/bug50660/bug50660-1.jpg

@@ -12,5 +12,5 @@ var_dump(count(exif_read_data(__DIR__."/bug62523_1.jpg")));
 Done
 --EXPECT--
 Test
-int(86)
+int(84)
 Done

ext/exif/tests/bug50660/bug50660-2.jpg

@@ -12,5 +12,5 @@ var_dump(count(exif_read_data(__DIR__."/bug62523_2.jpg")));
 Done
 --EXPECT--
 Test
-int(76)
+int(72)
 Done