Don't mention cut buffers

We haven't supported them in a long time so we shouldn't mention
them in the interface and documentation.
diff --git a/vncviewer/OptionsDialog.cxx b/vncviewer/OptionsDialog.cxx
index 55a366f..2f9df9c 100644
--- a/vncviewer/OptionsDialog.cxx
+++ b/vncviewer/OptionsDialog.cxx
@@ -720,7 +720,7 @@
   sendPrimaryCheckbox = new Fl_Check_Button(LBLRIGHT(tx, ty,
                                                      CHECK_MIN_WIDTH,
                                                      CHECK_HEIGHT,
-                                                     _("Send primary selection and cut buffer as clipboard")));
+                                                     _("Send primary selection as clipboard")));
   ty += CHECK_HEIGHT + TIGHT_MARGIN;
 #endif
 
diff --git a/vncviewer/parameters.cxx b/vncviewer/parameters.cxx
index 1151a7c..ad82f27 100644
--- a/vncviewer/parameters.cxx
+++ b/vncviewer/parameters.cxx
@@ -127,7 +127,7 @@
                             "Send clipboard changes to the server", true);
 #if !defined(WIN32) && !defined(__APPLE__)
 BoolParameter sendPrimary("SendPrimary",
-                          "Send the primary selection and cut buffer to the "
+                          "Send the primary selection to the "
                           "server as well as the clipboard selection",
                           true);
 #endif
diff --git a/vncviewer/vncviewer.man b/vncviewer/vncviewer.man
index 4b92b61..9ee616d 100644
--- a/vncviewer/vncviewer.man
+++ b/vncviewer/vncviewer.man
@@ -163,8 +163,8 @@
 .
 .TP
 .B \-SendPrimary
-Send the primary selection and cut buffer to the server as well as the
-clipboard selection. Default is on.
+Send the primary selection to the server as well as the clipboard
+selection. Default is on.
 .
 .TP
 .B \-Maximize