Removed rust toolchain workaround in Dockerfile

Dockerfile

@@ -2,16 +2,6 @@ FROM python:3.11
 WORKDIR /codemodder
 COPY . .
 
-# Install Rust (temporary workaround for libcst dependency)
-RUN apt-get update && \
-    apt-get install -y curl && \
-    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && \
-    apt-get remove -y curl && \
-    apt-get autoremove -y && \
-    apt-get clean && \
-    rm -rf /var/lib/apt/lists/*
-ENV PATH="/root/.cargo/bin:${PATH}"
-
 RUN pip install .
 
 ENTRYPOINT ["codemodder"]