package/quota: drop QUOTA_LIBS

Drop QUOTA_LIBS as this variable is always set to $(TARGET_NLS_LIBS)
since bump to version 4.05 in commit
540797f95553b0b5cbdd314e4bb0d3b136935b0a

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/quota/quota.mk

@@ -12,7 +12,7 @@ QUOTA_LICENSE_FILES = COPYING
 # We're patching configure.ac
 QUOTA_AUTORECONF = YES
 QUOTA_GETTEXTIZE = YES
-QUOTA_LIBS = $(TARGET_NLS_LIBS)
+QUOTA_CONF_ENV = LIBS="$(TARGET_NLS_LIBS)"
 QUOTA_CONF_OPTS = --disable-pie
 
 ifeq ($(BR2_PACKAGE_DBUS)$(BR2_PACKAGE_LIBNL),yy)
@@ -40,6 +40,4 @@ else
 QUOTA_CONF_OPTS += --disable-ldapmail
 endif
 
-QUOTA_CONF_ENV = LIBS="$(QUOTA_LIBS)"
-
 $(eval $(autotools-package))