package/uacme: allow ualpn with mbedTLS

Following the update to mbedTLS 2.28.0 in commit 0f8aab0, ualpn can
work with mbedTLS without restrictions.

References
https://git.buildroot.net/buildroot/commit?id=96c3b52132b41716ca445b4c73a1a8886c26e5ee
ndilieto/uacme#23 (comment)
ndilieto/uacme@bbee626
Mbed-TLS/mbedtls#3243

Signed-off-by: Nicola Di Lieto <nicola.dilieto@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uacme/Config.in

@@ -19,7 +19,6 @@ if BR2_PACKAGE_UACME
 config BR2_PACKAGE_UACME_UALPN
 	bool "enable ualpn"
 	depends on BR2_TOOLCHAIN_HAS_THREADS
-	depends on BR2_PACKAGE_OPENSSL || BR2_PACKAGE_GNUTLS
 	select BR2_PACKAGE_LIBEV
 	help
 	  Build and install ualpn, the transparent proxying tls-alpn-01
@@ -28,7 +27,4 @@ config BR2_PACKAGE_UACME_UALPN
 comment "ualpn needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
 
-comment "ualpn needs either OpenSSL or GnuTLS"
-	depends on !(BR2_PACKAGE_OPENSSL || BR2_PACKAGE_GNUTLS)
-
 endif