ci: Update x86_64-gnu to ubuntu:22.04

Author: cuviper

src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -19,9 +19,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   mingw-w64 \
   && rm -rf /var/lib/apt/lists/*
 
-COPY scripts/cmake.sh /scripts/
-RUN /scripts/cmake.sh
-
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh