revert: "chore(sync): add python build system"

This reverts commit e50316c.

ImportError: cannot import name 'main' from 'synchronizer' (unknown location)

https://github.com/ScottyLabs/governance/actions/runs/20835225055/job/59858465905

Author: Yuxiang-Huang

.devcontainer/post-create.sh

@@ -3,6 +3,7 @@ set -e
 
 # Install Python dependencies
 uv sync
+uv pip install -e .
 
 # Install xdg-utils for Vault login
 sudo apt-get update -y

.github/workflows/sync.yml

@@ -37,4 +37,5 @@ jobs:
       - name: Run Sync Script
         run: |
           uv sync --no-dev
+          uv pip install .
           uv run --no-dev sync

pyproject.toml

@@ -26,16 +26,13 @@ dev = [
     "types-hvac>=2.4.0.20251115",
 ]
 
-[build-system]
-requires = ["hatchling"]
-build-backend = "hatchling.build"
-
-[tool.hatch.build.targets.wheel]
-packages = ["__meta/synchronizer"]
-
 [project.scripts]
 sync = "synchronizer:main"
 
+[tool.setuptools.packages.find]
+where = ["__meta/synchronizer"]
+include = ["synchronizer*"]
+
 [tool.mypy]
 check_untyped_defs = true