[io grant] Remove IO::Handle.rw and .rwx

IO::Handle never had these methods

Author: zoffixznet

doc/Type/IO/Handle.pod6

@@ -92,24 +92,12 @@ Returns C<Bool::True> if the invocant is a path and accessible.
 
 Returns C<Bool::True> if the invocant is a path and writable.
 
-=head2 method rw
-
-    method rw(--> Bool)
-
-Returns C<Bool::True> if the invocant is a path, read and writable.
-
 =head2 method x
 
     method x(--> Bool)
 
 Returns C<Bool::True> if the invocant is a path and executable.
 
-=head2 method rwx
-
-    method rwx(--> Bool)
-
-Returns C<Bool::True> if the invocant is a path, executable, read and writable.
-
 =head2 method lines
 
     method lines($limit = Inf)