Revert "package/libshout: enable optional dependency for libressl"

This reverts commit 46b8fb7500ecca65a79507318fd3052208559c09 indeed if
libressl is selected as the openssl provider, the BR2_PACKAGE_OPENSSL
conditition will always be used and the BR2_PACKAGE_LIBRESSL condition
will never be triggered. Moreover, libressl provides a pkg-config file.

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

package/libshout/libshout.mk

@@ -33,9 +33,6 @@ endif
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 LIBSHOUT_CONF_OPTS += --with-openssl
 LIBSHOUT_DEPENDENCIES += openssl
-else ifeq ($(BR2_PACKAGE_LIBRESSL),y)
-LIBSHOUT_CONF_OPTS += --with-openssl=$(STAGING_DIR)/lib
-LIBSHOUT_DEPENDENCIES += libressl
 else
 LIBSHOUT_CONF_OPTS += --without-openssl
 endif