Erlotinib Withdrawn Phase 1 Trials for Recurrent Salivary Gland Cancer / Recurrent Squamous Cell Carcinoma of the Larynx / Recurrent Squamous Cell Carcinoma of the Hypopharynx / Recurrent Verrucous Carcinoma of the Oral Cavity / Recurrent Metastatic Squamous Neck Cancer With Occult Primary / Tongue Cancer / Recurrent Verrucous Carcinoma of the Larynx / Salivary Gland Squamous Cell Carcinoma / Recurrent Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity / Recurrent Squamous Cell Carcinoma of the Oropharynx / Recurrent Squamous Cell Carcinoma of the Lip and Oral Cavity Treatment