Remove setuptools workaround

See pypa/setuptools#1180.

Author: vivienm

tests/rendered/default/expected/lorem-ipsum/setup.cfg

@@ -29,6 +29,7 @@ install_requires =
     click
 python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, <4
 packages = find:
+package_dir = = src
 
 [options.extras_require]
 dev =

tests/rendered/default/expected/lorem-ipsum/setup.py

@@ -1,4 +1,4 @@
 from setuptools import setup
 
 
-setup(package_dir={"": "src"})
+setup()

tests/rendered/travis/expected/lorem-ipsum/setup.cfg

@@ -24,6 +24,7 @@ zip_safe = False
 install_requires =
 python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, <4
 packages = find:
+package_dir = = src
 
 [options.extras_require]
 dev =

tests/rendered/travis/expected/lorem-ipsum/setup.py

@@ -1,4 +1,4 @@
 from setuptools import setup
 
 
-setup(package_dir={"": "src"})
+setup()

{{cookiecutter.project_slug}}/setup.cfg

@@ -51,9 +51,7 @@ install_requires ={% if cookiecutter.cli_parser == "click" %}
     click{% endif %}
 python_requires = >={{ cookiecutter.python_min_version }}, {% if cookiecutter.python_min_version == "2.7" %}!=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, {% endif %}{% if cookiecutter.python_min_version >= "3.5" %}!=3.4.*, {% endif %}{% if cookiecutter.python_min_version >= "3.6" %}!=3.5.*, {% endif%}{% if cookiecutter.python_min_version >= "3.7" %}!=3.6.*, {% endif %}<4
 packages = find:
-{%- if cookiecutter.python_min_version >= "3.0" %}
 package_dir = = src
-{%- endif %}
 
 [options.extras_require]
 dev =

{{cookiecutter.project_slug}}/setup.py

@@ -1,4 +1,4 @@
 from setuptools import setup
 
 
-setup({% if cookiecutter.python_min_version < "3.0" %}package_dir={"": "src"}{% endif %})
+setup()