Remove '==> OpenFOAM bashrc env: ' from module (#28444)

It seems that spack reads the output of `setup_run_environment` to build the actual spack modules and lmod modules. So, any output here will used verbatim on the shell.

This patch fixes https://github.com/spack/spack/issues/26733

var/spack/repos/builtin/packages/openfoam/package.py

@@ -459,7 +459,7 @@ def setup_run_environment(self, env):
 
                 env.extend(mods)
                 minimal = False
-                tty.info('OpenFOAM bashrc env: {0}'.format(bashrc))
+                tty.debug('OpenFOAM bashrc env: {0}'.format(bashrc))
             except Exception:
                 minimal = True