Fixes to assertion logic, and cleanup of unused stuffs

tasks/capture_boot_device_details.yml

@@ -21,14 +21,6 @@
     bigboot_expansion_diff:
       "{{ bigboot_size_target | human_to_bytes - bigboot_boot_partsize | human_to_bytes }}"
 
-- name: Convert size difference to MB
-  ansible.builtin.set_fact:
-    bigboot_size_expansion_mb: "{{ bigboot_expansion_diff | int | human_readable(unit='M') }}"
-
-- name: Set bigboot size 4k aligned
-  ansible.builtin.set_fact:
-    bigboot_size: "{{ bigboot_size_expansion_mb[:-2] | int | get_block_size_up }}"
-
 - name: Validate if we need to expand boot
   block:
     - name: Set flag for Bigboot execution
@@ -48,4 +40,7 @@
 
     - name: Expansion of /boot required
       ansible.builtin.debug:
-        msg: "Will need to expand /boot by an additional {{ bigboot_size }}."
+        msg: >
+          Expansion of /boot is required.
+          Will attempt to increase to {{ bigboot_size_target }}, or
+          {{ bigboot_size_min }} at the least."