fix: remove content-type with no body request

[kobenguyent]

• move MIME type to constants
• remove content-type header when no body is chosen

no-body-remove-header.mov

[netlify]

✅ Deploy Preview for chimerical-kitsune-a0bfa0 ready!

Name	Link
🔨 Latest commit	a4e7ada
🔍 Latest deploy log	https://app.netlify.com/sites/chimerical-kitsune-a0bfa0/deploys/663a4c9f3e735b00086b9ed8
😎 Deploy Preview	https://deploy-preview-134--chimerical-kitsune-a0bfa0.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[flawiddsouza]

Thanks for the PR.

mimeType = 'No Body' is not required, as null is equal to no body. You can remove that if block. Rest everything looks good.

[kobenguyent]

Thanks for the PR. mimeType = 'No Body' is not required, as null is equal to no body. You can remove that if block. Rest everything looks good.

fixed!

[flawiddsouza]

Don't think this check is required, as there's a if block around it checking the same.