generate pkglist with query (not sync) operation

Using the sync operation with list option fails with --sysroot when
signed database files are around. Instead use the query operation, which
uses the local databases of installed pakages only.

The only downside is that we do no longer record the originating
repository.

Signed-off-by: Christian Hesse <mail@eworm.de>

archiso/mkarchiso

@@ -266,8 +266,7 @@ command_pkglist () {
     _show_config pkglist
 
     _msg_info "Creating a list of installed packages on live-enviroment..."
-    pacman -Sl --sysroot "${work_dir}/airootfs" | \
-        awk '/\[installed\]$/ {print $1 "/" $2 "-" $3}' > \
+    pacman -Q --sysroot "${work_dir}/airootfs" > \
         "${work_dir}/iso/${install_dir}/pkglist.${arch}.txt"
     _msg_info "Done!"