chore: remove pinned metadata version and license-files comment from pyproject.toml

Author: MIchaelMainer

pyproject.toml

@@ -6,11 +6,6 @@ build-backend = "flit_core.buildapi"
 [project]
 name = "msgraph-beta-sdk"
 
-# Pin metadata to 2.3 until ESRP Release supports License-Expression over the 
-# deprecated License field. Update License to License-Expression when unpinning 
-# metadata version.
-metadata-version = 2.3
-
 # The SDK version
 # x-release-please-start-version
 version = "1.59.0"
@@ -28,7 +23,8 @@ dependencies = [
 ]
 requires-python = ">=3.10"
 license = "MIT"
-license-files = ["LICENSE"]
+# Add this back when we upgrade flit and ESRP Release supports latest metadata.
+# license-files = ["LICENSE"]
 readme = "README.md"
 keywords = ["msgraph", "openAPI", "Microsoft", "Graph", "beta"]
 classifiers = [