Revert "[MANIFEST] Set sms performance parameters for prod to send about 4400 fragments per minute"

[sastels]

Reverts #3003

Just merge this if we get lots of ThrottlingExceptions!

Note that if someone changes the encrypted prod variables then we'll get a merge conflict. You'll have to set the CELERY_DELIVER_SMS_RATE_LIMIT to 1/s

[github-actions]

xray-daemon	xray     	1       	2024-07-29 19:45:48.684608347 +0000 UTC	deployed	aws-xray-4.0.8	3.3.12     

ingress	nginx    	2       	2024-02-12 19:08:42.93215444 +0000 UTC	deployed	nginx-ingress-1.1.2	3.4.2      

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