Index: uspace/lib/c/generic/str.c
===================================================================
--- uspace/lib/c/generic/str.c	(revision 375ab5e571cc53eeb2aa803a8e86052b51d7ad00)
+++ uspace/lib/c/generic/str.c	(revision ace588af2b019d0ee6e00a5a4491a2c9bf35ae96)
@@ -366,16 +366,4 @@
 	
 	return false;
-}
-
-/** Check whether wide string is plain ASCII.
- *
- * @return True if wide string is plain ASCII.
- *
- */
-bool wstr_is_ascii(const wchar_t *wstr)
-{
-	while (*wstr && ascii_check(*wstr))
-		wstr++;
-	return *wstr == 0;
 }
 
Index: uspace/lib/c/include/str.h
===================================================================
--- uspace/lib/c/include/str.h	(revision 375ab5e571cc53eeb2aa803a8e86052b51d7ad00)
+++ uspace/lib/c/include/str.h	(revision ace588af2b019d0ee6e00a5a4491a2c9bf35ae96)
@@ -72,5 +72,4 @@
 extern bool ascii_check(wchar_t ch);
 extern bool chr_check(wchar_t ch);
-extern bool wstr_is_ascii(const wchar_t *wstr);
 
 extern int str_cmp(const char *s1, const char *s2);