Remove most doxygen file-level commands, copyrights, and authors

Remove the \file directive, as it is always superfluous  because the
current file is implicit [1]:

> If the file name is omitted (i.e. the line after \file is left blank)
> then the documentation block that contains the \file command will belong
> to the file it is located in.

Author names and e-mails are not relevant for us: it can always be
inferred from git blame, and is often outdated.

Eurecom code has been contributed and was under OAI PL v1.0/v1.1.

For the cpack package contact: put generic email address that is
independent of an individual and that will remain reachable.

[1] https://www.doxygen.nl/manual/commands.html#cmdfile

openair1/PHY/CODING/ccoding_byte_lte.c

@@ -19,11 +19,9 @@
  *      contact@openairinterface.org
  */
 
-/* file: ccoding_byte_lte.c
-   purpose: Tail-biting convolutional code from 36-212, V8.6 2009-03.  Includes CRC (8-UCI,16-DCI)and RNTI scrambling (DCI)
-   author: raymond.knopp@eurecom.fr
-   date: 21.10.2009
-*/
+/*
+ * \brief Tail-biting convolutional code from 36-212, V8.6 2009-03.  Includes CRC (8-UCI,16-DCI)and RNTI scrambling (DCI)
+ */
 #include "coding_defs.h"
 
 //#define DEBUG_CCODE 1