Fix for 'the dumbest fix of the month'. In fact, just a simplification of an earlier fix.

acinclude.m4

@@ -1,17 +1,3 @@
-dnl This test is used by the curses driver.
-dnl Checks if $1 defined the ACS_S* preprocessor macros.
-dnl Example: AC_CHECK_DEFINE_ACS(curses.h)
-AC_DEFUN(AC_CHECK_DEFINE_ACS, [
-	AC_MSG_CHECKING(if $1 defines ACS_S3 and ACS_S7)
-	AC_TRY_COMPILE([#include <$1>], [[[char map[] = { ACS_S9, ACS_S7, ACS_S3, ACS_S1 }]]], [ 
-	dnl then
-		AC_DEFINE(DEFINED_ACS)
-		AC_MSG_RESULT(yes) ], [
-	dnl else
-		AC_MSG_RESULT(no) ],
-	[:])
-])
-
 AC_DEFUN(LCD_DRIVERS_SELECT, [
 AC_MSG_CHECKING(for which drivers to compile)
 
@@ -70,7 +56,6 @@ fi
  			AC_CHECK_LIB(ncurses, main, 
  				AC_CHECK_HEADER(ncurses.h,
  					dnl We have ncurses.h and libncurses, add driver.
- 					AC_CHECK_DEFINE_ACS(ncurses.h)
 	 				LIBCURSES="-lncurses"
  					DRIVERS="$DRIVERS curses_drv.o"
  					AC_DEFINE(CURSES_DRV)
@@ -84,7 +69,6 @@ dnl			else
  				AC_CHECK_LIB(curses, main, 
  					AC_CHECK_HEADER(curses.h,
  						dnl We have curses.h and libcurses, add driver.
- 						AC_CHECK_DEFINE_ACS(curses.h)
  						LIBCURSES="-lcurses"
  						DRIVERS="$DRIVERS curses_drv.o"
  						AC_DEFINE(CURSES_DRV)