To acquire a list of tables, use the INFORMATION SCHEMA.TABLES view. Using Dynamic SQL, generate Drop scripts in the select statement and drop them:
@sql NVARCHAR(max)=" DECLARE
SELECT @sql +='Drop table'+ QUOTENAME(TABLE SCHEMA) + '.'+ QUOTENAME(TABLE NAME) + '.'+ QUOTENAME(TABLE NAME) + '.'+ QUOTENAME(TABLE NAME) + ';'FROM INFORMATION SCHEMA.
TABLES IN WHICH THE TABLE TYPE IS 'BASE TABLE'
@sql Exec Sp executesql