Remove origin check for UnboundMethod#==

We're only concerned with where the method was declared
(rather than the receiver of the instance_method call).

See ruby/ruby#6855
and https://bugs.ruby-lang.org/issues/18798

Co-authored-by: Manef Zahra <manef.zahra@shopify.com>
Co-authored-by: Patrick Lin <patrick.lin@shopify.com>

Author: 3 people

spec/tags/core/unboundmethod/equal_value_tags.txt

@@ -52,8 +52,7 @@ public abstract static class EqualNode extends CoreMethodArrayArgumentsNode {
 
         @Specialization
         boolean equal(RubyUnboundMethod self, RubyUnboundMethod other) {
-            return self.origin == other.origin &&
-                    MethodNodes.areInternalMethodEqual(self.method, other.method);
+            return MethodNodes.areInternalMethodEqual(self.method, other.method);
         }
 
         @Specialization(guards = "!isRubyUnboundMethod(other)")