Remove deleted ibmcloud observability plugin (#108)

Signed-off-by: Sean Sundberg <[email protected]>

Author: Sean Sundberg

Containerfile-alpine

@@ -34,7 +34,6 @@ RUN pip3 install --break-system-packages azure-cli
 RUN curl -fsSL https://clis.cloud.ibm.com/install/linux | sh && \
     ibmcloud plugin install container-service -f && \
     ibmcloud plugin install container-registry -f && \
-    ibmcloud plugin install observe-service -f && \
     ibmcloud plugin install vpc-infrastructure -f && \
     ibmcloud config --check-version=false && \
     chmod -R g=u ${HOME}

Containerfile-fedora

@@ -38,7 +38,6 @@ USER root
 RUN curl -fsSL https://clis.cloud.ibm.com/install/linux | sh && \
     ibmcloud plugin install container-service -f && \
     ibmcloud plugin install container-registry -f && \
-    ibmcloud plugin install observe-service -f && \
     ibmcloud plugin install vpc-infrastructure -f && \
     ibmcloud config --check-version=false && \
     chown -R devops ${HOME}/.bluemix && \