Code Inspection: Unnecessary statement use
use statements that contain non-fully qualified class names and thus have no effect. The inspection only reports classes imports; functions and constants imports are not considered.
See Using namespaces: Aliasing/Importing (php.net) for details.
Suppress an inspection in the editor
Place the caret at the highlighted line and press Alt+Enter or click .
Click the arrow next to the inspection you want to suppress and select the necessary suppress action.