Revert of Create explicit microhttpd.gyp (patchset #6 id:100001 of https://codereview.chromium.org/1779903002/ )

Reason for revert:
breaking per commit housekeeper

Original issue's description:
> Create explicit microhttpd.gyp
>
> Committed: https://skia.googlesource.com/skia/+/80993639dfb8bcd26633ba1c3b7334f3ef7f6eb8

TBR=bungeman@google.com,jcgregorio@google.com,ethannicholas@google.com,joshualitt@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1781853002
4 files changed