Revert "Merge pull request #1668 from Forthoney/master"

This reverts commit 6cb2f3c, reversing
changes made to 20ccb5a.

core/thread.rbs

@@ -991,8 +991,9 @@ class Thread < Object
   #      from prog.rb:2:in `new'
   #      from prog.rb:2
   #
-  def raise: (?String message) -> nil
-           | (_Exception, ?_ToS message, ?Array[String] backtrace) -> nil
+  def self?.raise: () -> bot
+                 | (String message, ?cause: Exception?) -> bot
+                 | (_Exception exception, ?untyped message, ?::Array[String] backtrace, ?cause: Exception?) -> bot
 
   # <!--
   #   rdoc-file=thread.c

test/stdlib/Thread_test.rb

@@ -43,30 +43,4 @@ def test_native_thread_id
       Thread.current, :native_thread_id
     )
   end
-
-  def test_raise
-    t = Thread.new do
-      begin
-        sleep
-      rescue
-        retry
-      end
-    end
-    t.report_on_exception = false
-
-    assert_send_type "() -> nil",
-                     t, :raise
-    assert_send_type "(String) -> nil",
-                     t, :raise, "Error!"
-    assert_send_type "(singleton(StandardError)) -> nil",
-                     t, :raise, StandardError
-    assert_send_type "(StandardError) -> nil",
-                     t, :raise, StandardError.new('Error!')
-    assert_send_type "(singleton(StandardError), String) -> nil",
-                     t, :raise, StandardError, 'Error!'
-    assert_send_type "(singleton(StandardError), String, Array[String]) -> nil",
-                     t, :raise, StandardError, 'Error!', caller
-
-    t.kill
-  end
 end