Reject the alternative reality whereby executing
```
/usr/bin/cmake LRELEASE=/path/to/lrelease -DCMAKE_ARGS=blah /sourcedir
```
is an "environment variable". cmake does not accept "environment
variables" as command line arguments. It accepts source paths as command
line arguments, and silently (or in recent cmake, loudly) ignores
multiple source paths passed on the command line.
Hence this code produced:
```
CMake Warning:
Ignoring extra path from command line:
"/var/tmp/portage/net-analyzer/wireshark-4.6.6/work/wireshark-4.6.6_build/LRELEASE=/usr/lib64/qt6/bin/lrelease"
CMake Warning:
Ignoring extra path from command line:
"UIC=/usr/lib64/qt6/libexec/uic"
```
and clearly never worked, so does not need to be moved.
Moving it would be broken if it did do something, since it is not
exported so cmake would no longer be able to see it.
Bug: https://bugs.gentoo.org/979359
Fixes: dbd60bed7b
Signed-off-by: Eli Schwartz <eschwartz@gentoo.org>