remove wrong dockerfile

rigctld.dockerfile

@@ -1,18 +0,0 @@
-# build rigctld
-
-FROM debian;latest
-
-RUN mkdir bin src
-# this migh be too much, but let's try it
-RUN apt install -y libconfig-dev autoconf libtool git gcc g++ make cmake libudev-dev libreadline-dev libusb-1.0.0-dev libavahi-common-dev libavahi-client-dev
-
-# build hamlib/rigctld
-RUN <<EOF
-cd src
-git clone https://github.com/Hamlib/Hamlib.git
-./bootstrap
-./configure
-make
-EOF
-
-CMD /bin/rigctld