os/mac/keg.rb: move codesign_patched_binary from here

Library/Homebrew/os/mac/keg.rb

@@ -60,41 +60,4 @@ class Keg
     EOS
     raise
   end
-
-  def codesign_patched_binary(file)
-    return if MacOS.version < :big_sur
-    return unless Hardware::CPU.arm?
-
-    odebug "Codesigning #{file}"
-    # Use quiet_system to squash notifications about resigning binaries
-    # which already have valid signatures.
-    return if quiet_system("codesign", "--sign", "-", "--force",
-                           "--preserve-metadata=entitlements,requirements,flags,runtime",
-                           file)
-
-    # If the codesigning fails, it may be a bug in Apple's codesign utility
-    # A known workaround is to copy the file to another inode, then move it back
-    # erasing the previous file. Then sign again.
-    #
-    # TODO: remove this once the bug in Apple's codesign utility is fixed
-    Dir::Tmpname.create("workaround") do |tmppath|
-      FileUtils.cp file, tmppath
-      FileUtils.mv tmppath, file, force: true
-    end
-
-    # Try signing again
-    odebug "Codesigning (2nd try) #{file}"
-    result = system_command("codesign", args: [
-      "--sign", "-", "--force",
-      "--preserve-metadata=entitlements,requirements,flags,runtime",
-      file
-    ], print_stderr: false)
-    return if result.success?
-
-    # If it fails again, error out
-    onoe <<~EOS
-      Failed applying an ad-hoc signature to #{file}:
-      #{result.stderr}
-    EOS
-  end
 end