Revert "[parser] FLAG_aggressive_lazy_functions = true for a test run."

This reverts commit 0d51a259.

Reason for revert: Bot is broken; makes no sense to run the experiment now.

Original change's description:
> [parser] FLAG_aggressive_lazy_functions = true for a test run.
> 
> Just to get the RuntimeCallstats data. To be reverted soon.
> 
> BUG=v8:5516
> NOTREECHECKS=true
> 
> Change-Id: I4bb436900a79bb383bf8132002a129b601efdfe3
> Reviewed-on: https://chromium-review.googlesource.com/618987
> Reviewed-by: Adam Klein <adamk@chromium.org>
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47416}

TBR=adamk@chromium.org,machenbach@chromium.org,marja@chromium.org

Change-Id: I8506ae7e1e16a4d0b320a486f743c01f7f82e0f2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:5516
Reviewed-on: https://chromium-review.googlesource.com/620749Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47425}

src/flag-definitions.h

@@ -892,7 +892,7 @@ DEFINE_BOOL(allow_natives_syntax, false, "allow natives syntax")
 DEFINE_BOOL(trace_parse, false, "trace parsing and preparsing")
 DEFINE_BOOL(trace_preparse, false, "trace preparsing decisions")
 DEFINE_BOOL(lazy_inner_functions, true, "enable lazy parsing inner functions")
-DEFINE_BOOL(aggressive_lazy_inner_functions, true,
+DEFINE_BOOL(aggressive_lazy_inner_functions, false,
             "even lazier inner function parsing")
 DEFINE_IMPLICATION(aggressive_lazy_inner_functions, lazy_inner_functions)
 DEFINE_BOOL(preparser_scope_analysis, false,