tmpfs: drop unused module

The osbuild/tmpfs.py module is unused. Drop it.

osbuild/tmpfs.py

@@ -1,36 +0,0 @@
-
-import os
-import subprocess
-import tempfile
-
-
-__all__ = [
-    "TmpFs",
-]
-
-
-class TmpFs:
-    def __init__(self, path="/run/osbuild"):
-        self.path = path
-        self.root = None
-        self.mounted = False
-
-    def __enter__(self):
-        self.root = tempfile.mkdtemp(prefix="osbuild-tmpfs-", dir=self.path)
-        try:
-            subprocess.run(["mount", "-t", "tmpfs", "-o", "mode=0755", "tmpfs", self.root], check=True)
-            self.mounted = True
-        except subprocess.CalledProcessError:
-            os.rmdir(self.root)
-            self.root = None
-            raise
-        return self.root
-
-    def __exit__(self, exc_type, exc_value, exc_tb):
-        if not self.root:
-            return
-        if self.mounted:
-            subprocess.run(["umount", "--lazy", self.root], check=True)
-            self.mounted = False
-        os.rmdir(self.root)
-        self.root = None