There's no EXIF data on the pic that you've posted. We have absolutely no clue on what camera you're using. Not all camera will have the feature to mask off the pixel and you might have to send it to your respective service centre for this. If it's under warranty they may do it for free.
This is inevitable in a closely packed sensor dude. This is related to the lithographic process of the sensor. Though the manufacturer needs to carefully select the binned sensors, some escape the QC and will be eventually in the cameras. Some of these develop in the due course of usage as well.