jfjoch_viewer: Remove extra verbose

reader/JFJochReaderImage.cpp

@@ -106,16 +106,14 @@ void JFJochReaderImage::ProcessInputImage(const void *data, size_t npixel, int64
     CalcAutoContrast();
 }
 
-#include <iostream>
+
 void JFJochReaderImage::CalcAutoContrast() {
     if (valid_pixel.empty())
         auto_foreground = 10;
     else {
         auto it = valid_pixel.crbegin();
         const auto index = static_cast<size_t>(valid_pixel.size() * auto_foreground_range);
-        std::cout << valid_pixel.size() << " " << valid_pixel.size() * auto_foreground_range << " " << index << std::endl;
         std::advance(it, std::max<size_t>(1ULL, index) - 1);
-        std::cout << it->first << " " << it->second << std::endl;
 
         auto_foreground =  std::max(1, it->first);
     }