Exclude README.md when copying templates

Author: sofisl

handwritten/datastore/owlbot.py

@@ -55,6 +55,6 @@
 
 common_templates = gcp.CommonTemplates()
 templates = common_templates.node_mono_repo_library(relative_dir="handwritten/datastore", source_location="build/src")
-s.copy(templates, destination="handwritten/datastore")
+s.copy(templates, destination="handwritten/datastore", excludes=["README.md"])
 
 node.postprocess_gapic_library_hermetic(relative_dir="handwritten/datastore")