fix: review comments

Author: tolypash

package/ios/ImageManager.m

@@ -6,10 +6,6 @@ @implementation ImageManager: NSObject
 + (UIImage *)scaleImage:(UIImage *)image
              size:(CGSize)size
 {
-    if (!image || image.size.width <= 0 || image.size.height <= 0 || size.width <= 0 || size.height <= 0) {
-        return nil;
-    }
-    
     CGFloat scale = MAX(size.width/image.size.width, size.height/image.size.height);
     CGFloat width = image.size.width * scale;
     CGFloat height = image.size.height * scale;
@@ -29,10 +25,6 @@ + (UIImage *)scaleImage:(UIImage *)image
 + (CGSize)getImageCGSize:(UIImage *)imageData
             width:(int)width
 {
-    if (!imageData || imageData.size.width <= 0 || imageData.size.height <= 0 || width <= 0) {
-        return CGSizeZero;
-    }
-    
     NSInteger imgHeight = imageData.size.height;
     NSInteger imagWidth = imageData.size.width;
 

package/ios/ThePrinter.m

@@ -393,16 +393,7 @@ -(int) addImage: (NSDictionary *)source
         }
 
         CGSize size = [ImageManager getImageCGSize:data width:width];
-        // Check if size calculation failed (e.g., invalid image dimensions)
-        if (size.width <= 0 || size.height <= 0) {
-            return EPOS2_ERR_PARAM;
-        }
-        
         UIImage *scaledImage = [ImageManager scaleImage:data size:size];
-        // Check if image scaling failed
-        if (scaledImage == nil) {
-            return EPOS2_ERR_PARAM;
-        }
 
         int result = [epos2Printer_ addImage: scaledImage x:0 y:0 width:size.width height:size.height color:color mode:mode halftone:halftone brightness:brightness compress:compress];
         return result;