remove libjpeg test

test/libjpeg.cpp

@@ -1,22 +0,0 @@
-#include <stdio.h>
-#include <jpeglib.h>
-
-int main()
-{
-    jpeg_compress_struct compress = {};
-    jpeg_create_compress(&compress);
-
-    compress.input_components = 3;
-    jpeg_set_defaults(&compress);
-
-    compress.in_color_space = JCS_EXT_RGB;
-    jpeg_default_colorspace(&compress);
-
-    jpeg_destroy_compress(&compress);
-
-    jpeg_decompress_struct decompress = {};
-    jpeg_create_decompress(&decompress);
-    jpeg_destroy_decompress(&decompress);
-
-    return 0;
-}