sorbet: delete local fixes that have been merged upstream

Library/Homebrew/sorbet/rbi/upstream.rbi

@@ -3,57 +3,6 @@
 # This file contains temporary definitions for fixes that have
 # been submitted upstream to https://github.com/sorbet/sorbet.
 
-class IO
-  # https://github.com/sorbet/sorbet/pull/3722
-  sig do
-    type_parameters(:U).params(
-      fd: T.any(String, Integer),
-      mode: T.any(Integer, String),
-      opt: T.nilable(T::Hash[Symbol, T.untyped]),
-      blk: T.proc.params(io: T.attached_class).returns(T.type_parameter(:U))
-    ).returns(T.type_parameter(:U))
-  end
-  def self.open(fd, mode='r', opt=nil, &blk); end
-end
-
-class Pathname
-  # https://github.com/sorbet/sorbet/pull/3729
-  sig do
-    params(
-        owner: T.nilable(Integer),
-        group: T.nilable(Integer),
-    )
-    .returns(Integer)
-  end
-  def chown(owner, group); end
-end
-
-module FileUtils
-  # https://github.com/sorbet/sorbet/pull/3730
-  module_function
-
-  sig do
-    params(
-      src: T.untyped,
-      dest: T.untyped,
-      preserve: T.nilable(T::Boolean),
-      noop: T.nilable(T::Boolean),
-      verbose: T.nilable(T::Boolean)
-    ).returns(T.untyped)
-  end
-  def cp(src, dest, preserve: nil, noop: nil, verbose: nil); end
-
-  sig do
-    params(
-      list: T.any(String, Pathname),
-      mode: T.nilable(Integer),
-      noop: T.nilable(T::Boolean),
-      verbose: T.nilable(T::Boolean)
-    ).returns(T::Array[String])
-  end
-  def mkdir_p(list, mode: nil, noop: nil, verbose: nil); end
-end
-
 class Module
   # https://github.com/sorbet/sorbet/pull/3732
   sig do