Remove a couple unnecessary lines from XTerm's unicode config

Author: Kaiepi

doc/Language/unicode_entry.pod6

@@ -105,21 +105,19 @@ C<~/.Xdefaults>. Here is a sample configuration that supports displaying enough
 of unicode to program in Perl 6:
 
     =begin code :lang<.Xdefaults>
-    XTerm*combiningChars:     0
     XTerm*faceName:           xft:Noto Mono:style=Regular
     XTerm*faceNameDoublesize: xft:Noto Emoji:style=Regular
     XTerm*faceSize:           10
     XTerm*locale:             UTF-8
     XTerm*titleModes:         16
-    XTerm*useClipping:        false
     XTerm*utf8:               1
     XTerm*utf8Fonts:          1
     XTerm*utf8Title:          true
     =end code
 
 =head2 URxvt
 
-Similarly to xterm, unicode support is enabled in URxvt primarily by setting
+Similarly to XTerm, unicode support is enabled in URxvt primarily by setting
 its C<locale> option to C<en_US.UTF-8> in C<~/.Xdefaults>. Here is a sample
 configuration that supports displaying enough of unicode to program in Perl 6: