Remove xcrun-based clang finding

Not needed, since clangd will just discover the system default one way or another.

Author: cpsauer

refresh.template.py

@@ -683,25 +683,6 @@ def _get_apple_DEVELOPER_DIR():
     # Traditionally stored in DEVELOPER_DIR environment variable, but not provided by Bazel. See https://github.com/bazelbuild/bazel/issues/12852
 
 
-@functools.lru_cache(maxsize=None)
-def _get_apple_active_clang():
-    """Get path to xcode-select'd clang version."""
-    return subprocess.check_output(
-        ('xcrun', '--find', 'clang'),
-        encoding=locale.getpreferredencoding()
-    ).rstrip()
-    # Unless xcode-select has been invoked (like for a beta) we'd expect, e.g., '/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang' or '/Library/Developer/CommandLineTools/usr/bin/clang'.
-
-
-@functools.lru_cache(maxsize=None)
-def _get_apple_active_swiftc():
-    """Get path to xcode-select'd swiftc version."""
-    return subprocess.check_output(
-        ('xcrun', '--find', 'swiftc'),
-        encoding=locale.getpreferredencoding()
-    ).rstrip()
-
-
 def _apple_swift_patch(compile_args: typing.List[str]):
     """De-Bazel(rule_swift) the command into something sourcekit-lsp can parse."""
 
@@ -736,10 +717,8 @@ def _apple_platform_patch(compile_args: typing.List[str], environmentVariables =
         # Bazel wraps the compiler as `external/local_config_cc/wrapped_clang` and exports that wrapped compiler in the proto. However, we need a clang call that clangd can introspect. (See notes in "how clangd uses compile_commands.json" in ImplementationReadme.md for more.)
         # Removing the wrapper is also important because Bazel's Xcode (but not CommandLineTools) wrapper crashes if you don't specify particular environment variables (replaced below). We'd need the wrapper to be invokable by clangd's --query-driver if we didn't remove the wrapper.
         # Bazel wrapps the swiftc as `external/build_bazel_rules_swift/tools/worker/worker swiftc ` and worker has been removed in apple_swift_patch
-        if compile_args[0].endswith('swiftc'):
-            compile_args[0] = _get_apple_active_swiftc()
-        else:
-            compile_args[0] = _get_apple_active_clang()
+        if not compile_args[0].endswith('swiftc'):
+            compile_args[0] = 'clang'
 
         # We have to manually substitute out Bazel's macros so clang can parse the command
         # Code this mirrors is in https://github.com/bazelbuild/bazel/blob/master/tools/osx/crosstool/wrapped_clang.cc