Revert "Get cppcheck-htmlreport manually (BTS#949944 workaround)"

Fixed on the Debian unstable/sid side with 'cppcheck/unstable 1.90-4'.

This reverts commit 7b9c5f51.

docker/bind9/debian-template/Dockerfile

@@ -107,6 +107,3 @@ RUN ldconfig
 RUN curl -sSL https://github.com/jmmv/kyua/releases/download/kyua-$KYUA_VERSION/kyua-$KYUA_VERSION.tar.gz | tar -xz -C /usr/src
 RUN cd /usr/src/kyua-$KYUA_VERSION && autoreconf -fi && ./configure --prefix /usr && make && make install
 RUN ldconfig
-# Drop when https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=949944 is fixed.
-# This is cppcheck-htmlreport from 1.90.
-RUN if ! command -v cppcheck-htmlreport; then curl -s -o /usr/bin/cppcheck-htmlreport https://raw.githubusercontent.com/danmar/cppcheck/077e652de43ad962be0454d7be347816f7482739/htmlreport/cppcheck-htmlreport; chmod +x /usr/bin/cppcheck-htmlreport; apt install -y python-pygments; fi