Remove 'avr-config' directory from the Docekrfile

It is a leftover from when I copied the file from 'avr-config'.

Author: dylanmckay

.github/Dockerfile.ci

@@ -13,9 +13,9 @@ USER avr-rust
 RUN wget -q https://sh.rustup.rs -O /tmp/rustup.sh && sh /tmp/rustup.sh -y --profile minimal --default-toolchain nightly -c rust-src --quiet
 ENV PATH=/home/avr-rust/.cargo/bin:$PATH
 
-COPY --chown=avr-rust:avr-rust . /code/avr-config
+COPY --chown=avr-rust:avr-rust . /code
 
-WORKDIR /code/avr-config
+WORKDIR /code
 
 ENV AVR_CPU_FREQUENCY_HZ=16000000