Revert of Intentionally crash DM to make sure all bots are up-to-date. (patchset #1 id:1 of https://codereview.chromium.org/1274693002/ )

Reason for revert:
win x64 looks fixed

Original issue's description:
> Intentionally crash DM to make sure all bots are up-to-date.
>
> NOTREECHECKS=true
> NOTRY=true
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/3749b9646103f544f17aa926fab050f1e5178b17

TBR=borenet@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1275543003

dm/DM.cpp

@@ -846,7 +846,6 @@ int dm_main() {
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
-    SkASSERT(false);
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }