test swift language directly

testing/resources/swift_hooks_repo/.gitignore

@@ -1,4 +0,0 @@
-.DS_Store
-/.build
-/Packages
-/*.xcodeproj

testing/resources/swift_hooks_repo/.pre-commit-hooks.yaml

@@ -1,6 +0,0 @@
--   id: swift-hooks-repo
-    name: Swift hooks repo example
-    description: Runs the hello world app generated by swift package init --type executable (binary called swift_hooks_repo here)
-    entry: swift_hooks_repo
-    language: swift
-    files: \.(swift)$

testing/resources/swift_hooks_repo/Package.swift

@@ -1,7 +0,0 @@
-// swift-tools-version:5.0
-import PackageDescription
-
-let package = Package(
-    name: "swift_hooks_repo",
-    targets: [.target(name: "swift_hooks_repo")]
-)

testing/resources/swift_hooks_repo/Sources/swift_hooks_repo/main.swift

@@ -1 +0,0 @@
-print("Hello, world!")

testing/util.py

@@ -6,7 +6,6 @@ import subprocess
 
 import pytest
 
-from pre_commit import parse_shebang
 from pre_commit.util import CalledProcessError
 from pre_commit.util import cmd_output
 from pre_commit.util import cmd_output_b
@@ -50,10 +49,6 @@ skipif_cant_run_lua = pytest.mark.skipif(
     os.name == 'nt',
     reason="lua isn't installed or can't be found",
 )
-skipif_cant_run_swift = pytest.mark.skipif(
-    parse_shebang.find_executable('swift') is None,
-    reason="swift isn't installed or can't be found",
-)
 xfailif_windows = pytest.mark.xfail(os.name == 'nt', reason='windows')