Ollama: Clean up old Ollama files before running update (#5534)

* Update ollama.sh

* Update openwebui.sh

Author: tremor021

ct/ollama.sh

@@ -38,6 +38,8 @@ function update_script() {
     TMP_TAR=$(mktemp --suffix=.tgz)
     curl -fL# -o "${TMP_TAR}" "https://github.com/ollama/ollama/releases/download/${RELEASE}/ollama-linux-amd64.tgz"
     msg_info "Updating Ollama to ${RELEASE}"
+    rm -rf /usr/local/lib/ollama
+    rm -rf /usr/local/bin/ollama
     tar -xzf "${TMP_TAR}" -C /usr/local/lib/ollama
     ln -sf /usr/local/lib/ollama/bin/ollama /usr/local/bin/ollama
     echo "${RELEASE}" >/opt/Ollama_version.txt

ct/openwebui.sh

@@ -30,6 +30,8 @@ function update_script() {
 
   if [ -x "/usr/bin/ollama" ]; then
     msg_info "Updating Ollama"
+    rm -rf /usr/lib/ollama
+    rm -rf /usr/bin/ollama
     OLLAMA_VERSION=$(ollama -v | awk '{print $NF}')
     RELEASE=$(curl -s https://api.github.com/repos/ollama/ollama/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4)}')
     if [ "$OLLAMA_VERSION" != "$RELEASE" ]; then