I think you shoud try to upgrade these library, if you still need them.
I had the same problem with libusb and I resolved it by "brewing" an upgrade.
brew upgrade libqmi_api
brew upgrade libvousb
Sometime, brew can't symlink the lib into /usr/local. This occurs when you already have a old symlinked version of your lib.
brew link --overwrite libusb
should do the stuff.
Here is my testcase with libusb library :
$ brew doctor
Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.
Unexpected dylibs:
/usr/local/lib/libusb-1.0.0.dylib
$ brew upgrade libusb
==> Upgrading 1 outdated package, with result:
libusb 1.0.9
==> Upgrading libusb
==> Downloading http://downloads.sourceforge.net/project/libusb/libusb-1.0/libusb-1.0.9/libusb-1.0.9.tar.bz2
######################################################################## 100,0%
==> ./configure --prefix=/usr/local/Cellar/libusb/1.0.9
==> make install
Warning: Could not link libusb. Unlinking...
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
You can try again using `brew link libusb'
Possible conflicting files are:
/usr/local/lib/libusb-1.0.0.dylib
==> Summary
🍺 /usr/local/Cellar/libusb/1.0.9: 11 files, 420K, built in 9 seconds
$ brew link --overwrite libusb
Linking /usr/local/Cellar/libusb/1.0.9... 5 symlinks created
$ brew doctor
Your system is ready to brew.
$
Hope this helps.