Remove the useless invalidstruct from jtag.h.

git-svn-id: svn://svn.berlios.de/openocd/trunk@1990 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/jtag.h

@@ -800,10 +800,6 @@ extern int            jtag_power_dropout(int* dropout);
 extern int            jtag_srst_asserted(int* srst_asserted);
 
 /* JTAG support functions */
-struct invalidstruct
-{
-
-};
 
 /* execute jtag queue and check value and use mask if mask is != NULL. invokes
  * jtag_set_error() with any error. */