if ie compatability is off, do not warn at all about file sizes over IE's

limit. Fixes #1414

lib/less/functions.js

@@ -497,9 +497,6 @@ tree.functions = {
                 }
 
                 return new tree.URL(filePathNode || mimetypeNode, this.currentFileInfo).eval(this.env);
-            } else if (!this.env.silent) {
-                // if explicitly disabled (via --no-ie-compat on CLI, or env.ieCompat === false), merely warn
-                console.warn("WARNING: Embedding %s (%dKB) exceeds IE8's data-uri size limit of %dKB!", filePath, fileSizeInKB, DATA_URI_MAX_KB);
             }
         }