Remove legacy docker entrypoint from CI docker files

Closes gh-33930

Author: philwebb

ci/images/ci-image-jdk11/Dockerfile

@@ -8,5 +8,3 @@ RUN ./setup.sh java11
 ENV JAVA_HOME /opt/openjdk
 ENV PATH $JAVA_HOME/bin:$PATH
 ADD docker-lib.sh /docker-lib.sh
-
-ENTRYPOINT [ "switch", "shell=/bin/bash", "--", "codep", "/bin/docker daemon" ]

ci/images/ci-image-jdk17/Dockerfile

@@ -8,5 +8,3 @@ RUN ./setup.sh java8 java17
 ENV JAVA_HOME /opt/openjdk
 ENV PATH $JAVA_HOME/bin:$PATH
 ADD docker-lib.sh /docker-lib.sh
-
-ENTRYPOINT [ "switch", "shell=/bin/bash", "--", "codep", "/bin/docker daemon" ]

ci/images/ci-image-jdk19/Dockerfile

@@ -8,5 +8,3 @@ RUN ./setup.sh java8 java19
 ENV JAVA_HOME /opt/openjdk
 ENV PATH $JAVA_HOME/bin:$PATH
 ADD docker-lib.sh /docker-lib.sh
-
-ENTRYPOINT [ "switch", "shell=/bin/bash", "--", "codep", "/bin/docker daemon" ]

ci/images/ci-image/Dockerfile

@@ -12,4 +12,3 @@ ADD docker-lib.sh /docker-lib.sh
 ADD build-release-scripts.sh /build-release-scripts.sh
 ADD releasescripts /release-scripts
 RUN ./build-release-scripts.sh
-ENTRYPOINT [ "switch", "shell=/bin/bash", "--", "codep", "/bin/docker daemon" ]