chore: remove schema tool source layout check

src/karapace/backup/backends/v3/schema_tool.py

@@ -59,17 +59,6 @@ def relative_path(path: pathlib.Path) -> pathlib.Path:
     return pathlib.Path(str_path[len(cwd) + 1 :]) if str_path.startswith(cwd) else path
 
 
-def target_has_source_layout(git_target: str) -> bool:
-    with subprocess.Popen(
-        ["git", "show", f"{git_target}:src"],
-        stdout=subprocess.PIPE,
-        stderr=subprocess.PIPE,
-    ) as cp:
-        if cp.returncode == 128:
-            return False
-        return True
-
-
 def check_compatibility(git_target: str) -> None:
     errored = False
     found_any = False
@@ -82,13 +71,8 @@ def check_compatibility(git_target: str) -> None:
 
     subprocess.run(["git", "fetch", remote, branch], check=True, capture_output=True)
 
-    # Does the target version have source layout
-    source_layout = target_has_source_layout(git_target)
-
     for file in schema_directory.glob(f"*{extension}"):
         relative = relative_path(file)
-        if not source_layout:
-            relative = pathlib.Path(*relative.parts[1:])
         with subprocess.Popen(
             ["git", "show", f"{git_target}:{relative}"],
             stdout=subprocess.PIPE,