tests: remove scripts for extended fixtures

Author: abn

Diff for: tests/fixtures/extended_project/pyproject.toml

@@ -25,6 +25,3 @@ build = "build.py"
 # Requirements
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.4"
-
-[tool.poetry.scripts]
-foo = "foo:bar"

Diff for: tests/fixtures/extended_project_without_setup/pyproject.toml

@@ -27,6 +27,3 @@ generate-setup-file = false
 # Requirements
 [tool.poetry.dependencies]
 python = "~2.7 || ^3.4"
-
-[tool.poetry.scripts]
-foo = "foo:bar"