Labels and graphics on clothing can be distracting or unwanted in a photograph. Clients will often want logos removed – especially if they are from a competing brand. Sometimes it is better to remove them completely.
Usually, logos are placed over textures and patterns on clothing. These textures need to be replaced when removing a logo using different Photoshop retouching tools. That seems easier said than done, but you can quickly replace a texture or pattern by looking for a similar pattern on another area of clothing.