Reddit mentions of Griot's Garage 11074 Glass Polish, (Set of 2)

Did some research on it and you can make things quite a bit better with a few things:

• Glass Polish
  
  
• Glass Polishing Pad
  
  
• DA Polisher
  
  There isn't much you can do to mess it up unless you use the wrong stuff.
  
  For the polish, I found that Griot's Garage Glass Polishes are reviewed very highly and are meant to remove hairline scratches, very small pits, water spots, etc. You can buy the set of Fine Glass and Regular Glass polish, or you can just try the fine glass polish, but you need to finish whatever you do with the fine glass polish.
  
  For the polishing pads, I found these polishing pads which are also made by Griot's garage, and are also highly rated. The ones I linked are for 6" DA polishers, but are also available in 5" and 4".
  
  If you don't already have a DA polisher, you absolutely need to have one for this, you can't do it by hand. A few are recommended in various links in the sidebar, but Harbor Freight has a variable speed one that I've used for around $60 that you could also get.
  
  From your pictures, I can't tell exactly how bad these pits are, but if they're just in the surface, you should be able to remove them with a little of work. I've never done this for myself, so I can't say exactly how well it works, but from what I've read, it works. And it's cheaper to try this and hope it works than replace your entire windshield.

As u/eneka said, you probably need to polish the glass. Here's what I recommend.

• First try cleaning the class with a razor blade to remove most of the contaminants.
  
  
• Next, use some clay and lube to remove more contaminants.
  
  
• Finally, if the first two steps haven't made any progress, use a glass polish pad and some glass polisher
  
  Here is a video that explains these steps in more detail.
  
  Also, if you could take some pictures that would help us help you better :)