Revert "Set --strong in runtime arguments also when specified in the precompiled configuration"
Revert "Set --strong in runtime arguments also when specified in the precompiled configuration"

This reverts commit 2b62b921a4bccc5adec1478705b8410c477e06dd.

Reason for revert: <INSERT REASONING HERE>

Original change's description:
> Set --strong in runtime arguments also when specified in the precompiled configuration
> 
> Bug:
> Change-Id: I7296a9d8c8a8f3c0f39f065cbcc0e99f268b32ac
> Reviewed-on: https://dart-review.googlesource.com/26466
> Reviewed-by: Régis Crelier <regis@google.com>
> Commit-Queue: Siva Annamalai <2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com>

TBR=2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com,regis@google.com

Change-Id: I6bbfa509ef6b6679ec5030139ad276eb81790138
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/26540
Reviewed-by: Siva Annamalai <2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com>
Commit-Queue: Siva Annamalai <2e618a8cbd7bb6b3d4409061ae407d692a098546@google.com>

dartino/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk