do not remove iconv.h when UCLIBC_HAS_LOCALE is not set

Makefile.in

@@ -282,7 +282,7 @@ HEADERS_RM-$(UCLIBC_HAS_IPV6)                += netinet/ip6.h netinet/icmp6.h
 HEADERS_RM-$(UCLIBC_HAS_BACKTRACE)           += execinfo.h
 HEADERS_RM-$(UCLIBC_HAS_LIBICONV)            += iconv.h
 HEADERS_RM-$(UCLIBC_HAS_LIBINTL)             += intl.h
-HEADERS_RM-$(UCLIBC_HAS_LOCALE)              += iconv.h bits/uClibc_ctype.h
+HEADERS_RM-$(UCLIBC_HAS_LOCALE)              += bits/uClibc_ctype.h
 HEADERS_RM-$(UCLIBC_HAS_PTY)                 += pty.h
 HEADERS_RM-$(UCLIBC_HAS_REALTIME)            += mqueue.h bits/mqueue.h sched.h \
 	bits/sched.h \