respect build requirements at poetry install (#7975)

fix an issue where build requirements were not respected if a build script is used and `generate-setup-file` is set to true

src/poetry/masonry/builders/editable.py

@@ -9,7 +9,6 @@
 from pathlib import Path
 from typing import TYPE_CHECKING
 
-from poetry.core.constraints.version import Version
 from poetry.core.masonry.builders.builder import Builder
 from poetry.core.masonry.builders.sdist import SdistBuilder
 from poetry.core.masonry.utils.package_include import PackageInclude
@@ -101,16 +100,7 @@ def _setup_build(self) -> None:
                 f.write(decode(builder.build_setup()))
 
         try:
-            if self._env.pip_version < Version.from_parts(19, 0):
-                pip_install(self._path, self._env, upgrade=True, editable=True)
-            else:
-                # Temporarily rename pyproject.toml
-                renamed_pyproject = self._poetry.file.path.with_suffix(".tmp")
-                self._poetry.file.path.rename(renamed_pyproject)
-                try:
-                    pip_install(self._path, self._env, upgrade=True, editable=True)
-                finally:
-                    renamed_pyproject.rename(self._poetry.file.path)
+            pip_install(self._path, self._env, upgrade=True, editable=True)
         finally:
             if not has_setup:
                 os.remove(setup)