chore: update README.md

Author: actions-user

README.md

@@ -86,13 +86,6 @@ module "lambda" {
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 ## Makefile Targets
 ```text
-Available targets:
-
-  help                                Help screen
-  help/all                            Display help for all targets
-  help/short                          This help short screen
-  lint                                Lint terraform code
-
 ```
 <!-- markdownlint-restore -->
 <!-- markdownlint-disable -->