Remove ssl.dh-file option from lighttpd

The file took ages to generate on the target.

yocto/meta-klipper/recipes-extended/lighttpd/files/lighttpd.conf

@@ -115,7 +115,6 @@ ssl.pemfile                = "/etc/ssl/certs/localcert.pem"
 #### https://syslink.pl/cipherlist/
 ssl.honor-cipher-order = "enable"
 ssl.cipher-list = "EECDH+AESGCM:EDH+AESGCM"
-ssl.dh-file = "/etc/lighttpd/dhparam.pem" # openssl dhparam -out /etc/lighttpd/dhparam.pem 4096
 setenv.add-response-header = (
     "Strict-Transport-Security" => "max-age=63072000; includeSubDomains; preload",
     "X-Frame-Options" => "DENY",

yocto/meta-klipper/recipes-extended/lighttpd/lighttpd_1.4.55.bb

@@ -92,10 +92,3 @@ python populate_packages_prepend () {
     lighttpd_libdir = d.expand('${libdir}')
     do_split_packages(d, lighttpd_libdir, r'^mod_(.*)\.so$', 'lighttpd-module-%s', 'Lighttpd module for %s', extra_depends='')
 }
-
-pkg_postinst_ontarget_${PN}() {
-    #!/bin/sh
-    if [ ! -s /etc/lighttpd/dhparam.pem ]; then
-        openssl dhparam -out /etc/lighttpd/dhparam.pem 4096
-    fi
-}