check: Remove compare_imports_to_dependencies()

No longer in use.

fawltydeps/check.py

@@ -136,23 +136,3 @@ def calculate_unused(
         UnusedDependency(name, [dep.source for dep in deps])
         for name, deps in groupby(unused, key=lambda d: d.name)
     ]
-
-
-def compare_imports_to_dependencies(
-    imports: List[ParsedImport],
-    dependencies: List[DeclaredDependency],
-    settings: Settings,
-) -> Tuple[Dict[str, Package], List[UndeclaredDependency], List[UnusedDependency]]:
-    """Compares imports to dependencies.
-
-    Returns set of undeclared imports and set of unused dependencies.
-    For undeclared dependencies returns files and line numbers
-    where they were imported in the code.
-    """
-    # TODO consider empty list of dependency to import
-    packages = resolve_dependencies(dep.name for dep in dependencies)
-    return (
-        packages,
-        calculate_undeclared(imports, packages, settings),
-        calculate_unused(imports, dependencies, packages, settings),
-    )

tests/test_compare_imports_to_dependencies.py

@@ -9,7 +9,6 @@
     LocalPackageLookup,
     calculate_undeclared,
     calculate_unused,
-    compare_imports_to_dependencies,
     resolve_dependencies,
 )
 from fawltydeps.settings import Settings
@@ -261,17 +260,3 @@ def test_calculate_unused(vector):
         vector.imports, vector.declared_deps, vector.expect_resolved_deps, settings
     )
     assert actual == vector.expect_unused_deps
-
-
-@pytest.mark.parametrize("vector", [pytest.param(v, id=v.id) for v in testdata])
-def test_compare_imports_to_dependencies(vector):
-    settings = Settings(
-        ignore_unused=vector.ignore_unused, ignore_undeclared=vector.ignore_undeclared
-    )
-    actual = compare_imports_to_dependencies(
-        vector.imports, vector.declared_deps, settings
-    )
-    actual_resolved_deps, actual_undeclared_deps, actual_unused_deps = actual
-    assert actual_resolved_deps == vector.expect_resolved_deps
-    assert actual_undeclared_deps == vector.expect_undeclared_deps
-    assert actual_unused_deps == vector.expect_unused_deps