Delete renamed examples (#691)

Delete examples before generation.

Author: therve

Makefile

@@ -1,6 +1,6 @@
 .PHONY: all
 all: .generator
-	@rm -rf packages/datadog-api-client-v*/
+	@rm -rf packages/datadog-api-client-v*/ examples/v*
 	@pre-commit run --all-files --hook-stage=manual generator-v1 || true
 	@pre-commit run --all-files --hook-stage=manual generator-v2 || true
 	@pre-commit run --all-files --hook-stage=manual lint || echo "modified files"