Drop tools tree from cache manifest

The existing check is too primitive and actually causes issues when
using the new mkosi sandbox verb we'll add in the next commit so let's
drop it.

diff --git a/mkosi/config.py b/mkosi/config.py
index 68f7bfa32cae8a180593d15b8838f935bd355491..7788b309e948f338b5b874380b7ee6c1c4cdf732 100644 (file)
--- a/mkosi/config.py
+++ b/mkosi/config.py
@@ -1945,12 +1945,6 @@ class Config:
             "prepare_scripts": sorted(
                 base64.b64encode(script.read_bytes()).decode() for script in self.prepare_scripts
             ),
-            # Statting the root directory of the tools tree isn't fool proof but should be good enough.
-            "tools_tree": (
-                [self.tools_tree, self.tools_tree.stat().st_mtime_ns]
-                if self.tools_tree and self.tools_tree.exists()
-                else []
-            ),
         }
 
     def to_dict(self) -> dict[str, Any]: