curl: reinplace warnings

[ctreleaven (Craig Treleaven)]

Happened to notice these while doing a rather large build from source:

--->  Fetching distfiles for curl
--->  Verifying checksums for curl
--->  Extracting curl
--->  Configuring curl
Warning: reinplace s|-arch [a-z0-9_]+||g didn't change anything in /opt/dvr/var/macports/build/_Users_macmyth_macports-ports_net_curl/curl/work/curl-7.53.1/libcurl.pc
Warning: reinplace s/ '(host_alias|--host)=[^']+'//g didn't change anything in /opt/dvr/var/macports/build/_Users_macmyth_macports-ports_net_curl/curl/work/curl-7.53.1/curl-config
--->  Building curl
--->  Staging curl into destroot
--->  Installing curl @7.53.1_0+ssl
--->  Activating curl @7.53.1_0+ssl
--->  Cleaning curl

[ryandesign (Ryan Carsten Schmidt)]

In 24cd48a91c357de46896846dd6b2eb2306c6694d/macports-ports (master):

curl: Remove reinplace that's no longer needed

See: #53700

libcurl.pc doesn't contain LDFLAGS anymore so there aren't any -arch
flags in there to remove anymore.

See: ​https://github.com/curl/curl/commit/4c8adc8fee5e55754da3d8f8d982733a7bf3dece

curl-config still uses LDFLAGS so the reinplace is still needed there.

[ryandesign (Ryan Carsten Schmidt)]

In c65aea1956d3a6bd26495f0fe3c3f0d3920819ee/macports-ports (master):

curl: Reinplace quietly

Quiet the host/--host_alias reinplace because the values it's removing
will only be there in some situations.

Closes: #53700