workflows: build: remove setuptools_scm hack

The SETUPTOOLS_SCM_PRETEND_VERSION was needed as ./setup.py would fail
without it. As setuptools_scm will fail if there is not git repo, and
the github workflow container does not include the source code git repo.

A previous commit added "fallback_version" to setuptools_scm which
instructs it to use the version from VERSION.txt when the git repo is
missing. So this hack is no longer needed.

Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

.github/workflows/build.yml

@@ -30,8 +30,8 @@ jobs:
 
       - name: Build
         run: |
-          SETUPTOOLS_SCM_PRETEND_VERSION="0" make
+          make
 
       - name: Run check
         run: |
-          SETUPTOOLS_SCM_PRETEND_VERSION="0" make check
+          make check