grub_install: Remove core grub modules from EFI partition for i386-pc

The image also boots on Hyper-V Generation 1 VM (BIOS) if the modules
are removed.

Signed-off-by: Adrian Vladu <avladu@cloudbasesolutions.com>

build_library/grub_install.sh

@@ -183,11 +183,9 @@ sudo grub-mkimage \
     --output "${ESP_DIR}/${GRUB_DIR}/${CORE_NAME}" \
     "${CORE_MODULES[@]}"
 
-if [[ "${FLAGS_target}" != i386-pc ]]; then
-    for mod in "${CORE_MODULES[@]}"; do
-      sudo rm "${ESP_DIR}/${GRUB_DIR}/${mod}.mod"
-    done
-fi
+for mod in "${CORE_MODULES[@]}"; do
+    sudo rm "${ESP_DIR}/${GRUB_DIR}/${mod}.mod"
+done
 
 # Now target specific steps to make the system bootable
 case "${FLAGS_target}" in