Remove mypy

proxy/Makefile

@@ -4,13 +4,9 @@
 all: help
 
 .PHONY: lint
-lint: check-isort check-black mypy ## Run isort, black and flake8 and mypy
+lint: check-isort check-black ## Run isort, black and flake8
 	@poetry run flake8 securedrop_proxy tests
 
-.PHONY: mypy
-mypy: ## Run mypy static type checker
-	@poetry run mypy --ignore-missing-imports securedrop_proxy
-
 .PHONY: black
 black: ## Run black for file formatting
 	@echo "Running black (may result in changes in your working directory)…"
@@ -38,7 +34,7 @@ test: ## Runs tests with pytest
 	@poetry run pytest
 
 .PHONY: check
-check: lint test mypy ## Runs all tests and code checkers
+check: lint test ## Runs all tests and code checkers
 
 # Explanation of the below shell command should it ever break.
 # 1. Set the field separator to ": ##" and any make targets that might appear between : and ##