[BP] MB-52847: Skip ep_overhead check in ep_testsuite 'disk>RAM delete golden path'

ep_overhead (the amount of memory overhead in Checkpoint and related
structures) can decrease during this test if for example an entire
Checkpoint is persisted and all items from it can be discarded.

As such, remove the check on it as it is invalid.

Change-Id: I195c17df2f1f0a0f0239885376248661dcbb7b66
Reviewed-on: https://review.couchbase.org/c/kv_engine/+/200042
Reviewed-by: Jim Walker <[email protected]>
Tested-by: Paolo Cocchi <[email protected]>
Well-Formed: Restriction Checker

Author: daverigby

engines/ep/tests/ep_testsuite.cc

@@ -4302,7 +4302,6 @@ static enum test_result test_disk_gt_ram_golden(EngineIface* h) {
 
 static enum test_result test_disk_gt_ram_paged_rm(EngineIface* h) {
     // Check/grab initial state.
-    int overhead = get_int_stat(h, "ep_overhead");
     const auto initial_enqueued = get_int_stat(h, "ep_total_enqueued");
 
     // Store some data and check post-set state.
@@ -4313,9 +4312,6 @@ static enum test_result test_disk_gt_ram_paged_rm(EngineIface* h) {
     checkeq(initial_enqueued + 1,
             get_int_stat(h, "ep_total_enqueued"),
             "Expected total_enqueued to increase by 1 after storing 1 value");
-    checkge(get_int_stat(h, "ep_overhead"),
-            overhead,
-            "Fell below initial overhead.");
 
     // Evict the data.
     evict_key(h, "k1");