LWG 3280 struck the problematic/extraneous converting constructor templates from the meow_view range adaptor types in the standard library with the exception of common_view. The omission of common_view seems to have been simply an oversight: its converting constructor template is no less problematic or extraneous. We should remove common_view's converting constructor template as well to finish the task. Both cmcstl2 and range-v3 removed the converting constructor template from common_view when removing the other converting constructor templates, so we have implementation experience that this change is good as well as consistent with the general thrust of LWG 3280.