chore: Remove setup.py (appium#1218)

BREAKING CHANGE: remove legacy setup.py

Author: Dor-bl

README.md

@@ -26,15 +26,15 @@ download and unarchive the source tarball (Appium-Python-Client-X.X.tar.gz).
     ```shell
     tar -xvf Appium-Python-Client-X.X.tar.gz
     cd Appium-Python-Client-X.X
-    python setup.py install
+    pip install .
     ```
 
 3. Install from source via [GitHub](https://github.com/appium/python-client).
 
     ```shell
     git clone git@github.com:appium/python-client.git
     cd python-client
-    python setup.py install
+    pip install .
     ```
 
 ## Compatibility Matrix

appium/version.py

@@ -12,11 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from importlib import metadata
+from importlib.metadata import version as _metadata_version
 
-
-def _get_version():
-    return metadata.version('Appium-Python-Client')
-
-
-version = _get_version()
+version = _metadata_version('Appium-Python-Client')

pyproject.toml

@@ -64,11 +64,6 @@ dev = [
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
-[tool.hatch.version]
-source = "regex"
-path = "appium/version.py"
-pattern = "(?P<version>\\d+\\.\\d+\\.\\d+)"
-
 [tool.hatch.build]
 exclude = [
   "test/",