remove http-related nginx config

[conectado]

Continuing with #864 remove remaining HTTP related config.

[coveralls]

Pull Request Test Coverage Report for Build 4b1090d24596f0ad72ea39adb517eaa1dda2ead0-PR-866

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 7 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.1%) to 69.081%

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Files with Coverage Reduction	New Missed Lines	%
apps/fz_http/lib/fz_http_web/channels/user_socket.ex	7	0%

Totals
Change from base Build 0c50ac677dd412ccc23880a81c1ecf4d2e1fd3ba:	0.1%
Covered Lines:	992
Relevant Lines:	1436

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💛 - Coveralls

[jamilbk]

@conectado Mind if I push up a commit to this PR? I think I want to add some docs/config changes.

[conectado]

@conectado Mind if I push up a commit to this PR? I think I want to add some docs/config changes.

@jamilbk go ahead!