python-freethreading: remove CLT requirement

This seems to no longer be needed. See #196805.

While we're here, let's fix up some of these heredoc delimiters.

Author: carlocab

Formula/p/python-freethreading.rb

@@ -19,10 +19,6 @@ class PythonFreethreading < Formula
     sha256 x86_64_linux:  "6daceb67da4ef3b087c9e46f636b42632261380bb971208d6e747c878d835a77"
   end
 
-  # setuptools remembers the build flags python is built with and uses them to
-  # build packages later. Xcode-only systems need different flags.
-  pour_bottle? only_if: :clt_installed
-
   depends_on "pkg-config" => :build
   depends_on "mpdecimal"
   depends_on "openssl@3"
@@ -142,13 +138,6 @@ def install
     cppflags       = ["-I#{HOMEBREW_PREFIX}/include"]
 
     if OS.mac?
-      if MacOS.sdk_path_if_needed
-        # Help Python's build system (setuptools/pip) to build things on SDK-based systems
-        # The setup.py looks at "-isysroot" to get the sysroot (and not at --sysroot)
-        cflags  << "-isysroot #{MacOS.sdk_path}"
-        ldflags << "-isysroot #{MacOS.sdk_path}"
-      end
-
       # Enabling LTO on Linux makes libpython3.*.a unusable for anyone whose GCC
       # install does not match the one in CI _exactly_ (major and minor version).
       # https://github.com/orgs/Homebrew/discussions/3734
@@ -348,7 +337,7 @@ def post_install
     # Mark Homebrew python as externally managed: https://peps.python.org/pep-0668/#marking-an-interpreter-as-using-an-external-package-manager
     # Placed after ensurepip since it invokes pip in isolated mode, meaning
     # we can't pass --break-system-packages.
-    (lib_cellar/"EXTERNALLY-MANAGED").write <<~EOS
+    (lib_cellar/"EXTERNALLY-MANAGED").write <<~PYTHON
       [externally-managed]
       Error=To install Python packages system-wide, try brew install
        xyz, where xyz is the package you are trying to
@@ -377,11 +366,11 @@ def post_install
        file. Failure to do this can result in a broken Homebrew installation.
 
        Read more about this behavior here: <https://peps.python.org/pep-0668/>
-    EOS
+    PYTHON
   end
 
   def sitecustomize
-    <<~EOS
+    <<~PYTHON
       # This file is created by Homebrew and is executed on each python startup.
       # Don't print from here, or else python command line scripts may fail!
       # <https://docs.brew.sh/Homebrew-and-Python>
@@ -434,7 +423,7 @@ def sitecustomize
           split_prefix = f"#{HOMEBREW_PREFIX}/opt/python-{split_module}@#{version.major_minor}t/libexec"
           if os.path.isdir(split_prefix):
               sys.path.append(split_prefix)
-    EOS
+    PYTHON
   end
 
   def caveats
@@ -472,7 +461,7 @@ def caveats
                  shell_output("#{python3} -Sc 'import dbm.gnu' 2>&1", 1)
 
     # Verify that the selected DBM interface works
-    (testpath/"dbm_test.py").write <<~EOS
+    (testpath/"dbm_test.py").write <<~PYTHON
       import dbm
 
       with dbm.ndbm.open("test", "c") as db:
@@ -481,7 +470,7 @@ def caveats
           assert list(db.keys()) == [b"foo \\xbd"]
           assert b"foo \\xbd" in db
           assert db[b"foo \\xbd"] == b"bar \\xbd"
-    EOS
+    PYTHON
     system python3, "dbm_test.py"
 
     system bin/"pip#{version.major_minor}t", "list", "--format=columns"