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inferred from git blame, and is often outdated.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

openair2/UTIL/OMG/mobility_parser.c

@@ -19,16 +19,9 @@
  *      contact@openairinterface.org
  */
 
-/*! \file mobility_parser.c
-* \brief A parser for trace-based mobility information (parsed from a file)
-* \author  S. Gashaw, N. Nikaein,  J. Harri
-* \date 2014
-* \version 0.1
-* \company EURECOM
-* \email:
-* \note
-* \warning
-*/
+/*!
+ * \brief A parser for trace-based mobility information (parsed from a file)
+ */
 
 #include <stdio.h>
 #include <string.h>