move psutil to dev dependencies

pyproject.toml

@@ -26,8 +26,6 @@ passlib = "^1.7.0"
 docopt = "^0.6.0"
 PyYAML = ">=5.4.0,<7.0"
 coveralls = {version = "^3.0.1", optional = true}
-psutil = "^5.9.0"
-
 
 [tool.poetry.extras]
 ci = ["coveralls"]
@@ -43,6 +41,7 @@ black = "^21.10b0"
 flake8 = "^3.9.0"
 hypothesis = "^6.10.0"
 pytest-logdog = "^0.1.0"
+psutil = "^5.9.0"
 
 [tool.poetry.scripts]
 amqtt = 'amqtt.scripts.broker_script:main'