Remove configure check for strlcpy, which we never actually use

Originally committed to SVN as r6065.

aegisub/configure.in

@@ -329,12 +329,6 @@ AC_C_INLINE
 AC_C_VOLATILE
 AC_CHECK_LIB([m], [main])
 
-AC_CHECK_FUNC([strlcpy], [
-   AC_DEFINE([HAVE_STRLCPY], [1], [strlcpy() exists in the c library.])
-], [])
-
-#AC_LIBTOOL_DLOPEN_SELF
-
 AC_AGI_COMPILE([pragma once], [pragma_once], [], [],[
 #pragma once
 int main(void) {}
@@ -344,18 +338,14 @@ if test "$agi_cv_pragma_once" = "no"; then
     AC_MSG_FAILURE([Aegisub requires #pragma once to work correctly.])
 fi
 
+AC_CHECK_HEADER([wchar.h],,[AC_MSG_FAILURE([aegisub requires wide character support])])
+
 AC_CHECK_HEADERS([sys/time.h])
 AC_CHECK_SIZEOF([time_t])
 
 ##############################
 # Program Support and Features
 ##############################
-#################
-## Wide Character
-#################
-AC_CHECK_HEADER([wchar.h],,[AC_MSG_FAILURE([aegisub requires wide character support])])
-
-
 #########
 ## OpenGL
 #########