Revert "Reland "[snapshot] Temporarily enable --lazy-deserialization""

This reverts commit ddb5255f.

Reason for revert: Mission accomplished / Canary 3213 / V8 6.3.104

Original change's description:
> Reland "[snapshot] Temporarily enable --lazy-deserialization"
> 
> This is a reland of da6aab43
> Original change's description:
> > [snapshot] Temporarily enable --lazy-deserialization
> > 
> > Flip the flag for one day to determine impact and flush out bugs.
> > Please add crashes and regressions to https://crbug.com/v8/6796.
> > 
> > Bug: v8:6624,v8:6796
> > Change-Id: I8b0581c40d956e01f94e9098ff935fdd5af36156
> > Reviewed-on: https://chromium-review.googlesource.com/651408
> > Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> > Reviewed-by: Yang Guo <yangguo@chromium.org>
> > Reviewed-by: Michael Hablich <hablich@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#47893}
> 
> Bug: v8:6624, v8:6796
> Change-Id: I7df43925ccb2e6c1d3455439690526b0e1a6a747
> Reviewed-on: https://chromium-review.googlesource.com/660218
> Reviewed-by: Michael Hablich <hablich@chromium.org>
> Commit-Queue: Jakob Gruber <jgruber@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47952}

TBR=yangguo@chromium.org,hablich@chromium.org,jgruber@chromium.org

Change-Id: Ia0f6dc05132b66a093d4df5ec470709b53aa17d6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:6624, v8:6796
Reviewed-on: https://chromium-review.googlesource.com/662797Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47962}

src/flag-definitions.h

@@ -935,7 +935,7 @@ DEFINE_INT(runtime_stats, 0,
 DEFINE_VALUE_IMPLICATION(runtime_call_stats, runtime_stats, 1)
 
 // snapshot-common.cc
-DEFINE_BOOL(lazy_deserialization, true,
+DEFINE_BOOL(lazy_deserialization, false,
             "Deserialize code lazily from the snapshot.")
 DEFINE_BOOL(trace_lazy_deserialization, false, "Trace lazy deserialization.")
 DEFINE_BOOL(profile_deserialization, false,