Don't remove cargo cache

Signed-off-by: Pragyan Poudyal <pragyanpoudyal41999@gmail.com>

Author: Johan-Liebert1

Dockerfile

@@ -35,7 +35,7 @@ WORKDIR /src
 # First we download all of our Rust dependencies
 # Note: Local path dependencies (from [patch] sections) are auto-detected and bind-mounted by the Justfile
 RUN --mount=type=tmpfs,target=/run --mount=type=tmpfs,target=/tmp --mount=type=cache,target=/src/target --mount=type=cache,target=/var/roothome \
-    rm -rf /var/roothome/.cargo/registry; cargo fetch
+    cargo fetch
 
 # We always do a "from scratch" build
 # https://docs.fedoraproject.org/en-US/bootc/building-from-scratch/