[Structure IO] Remove file column interface

[joergi-w]

Level 1 - Easy

We expose a broken file column interface for our files. Read the documentation of structure_file_input to get to know the interface.

• Remove all tests for the column interface (usually have column in their test name)
• Remove the Tuple interface from the sequence_file_input object (all get functions)
• Remove the file_as_tuple_type columns_buffer;
• Remove the member function read_columns
• Remove the std-overloads for the tuple like interface
• Remove all Field column types and tuple type (see group of types in the beginning)
• Remove the column based reading from the documentation of structure_file_input. Check if it is mentioned anywhere else in the documentation!
• Remove all container_container concepts from the structure_file_input_traits and remove the corresponding documentation
• Remove the container_container types from structure_file_input_default_traits_rna/aa