Issue #2272467 by ParisLiakos: Remove usages of watchdog() from procedural code.

core/authorize.php

core/includes/bootstrap.inc

core/includes/errors.inc

core/includes/file.inc

core/includes/mail.inc

core/includes/menu.inc

core/includes/theme.inc

core/includes/unicode.inc

core/modules/file/file.api.php

core/modules/file/file.module

core/modules/filter/filter.module

core/modules/language/language.module

core/modules/locale/locale.batch.inc

core/modules/locale/locale.bulk.inc

core/modules/locale/locale.module

core/modules/system/entity.api.php

core/modules/system/src/Tests/System/SettingsRewriteTest.php

core/modules/system/system.module

core/modules/tracker/tracker.module

core/modules/user/user.module