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inferred from git blame, and is often outdated.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

ci-scripts/checkAddedWarnings.sh

@@ -22,7 +22,6 @@
 
 function usage {
     echo "OAI Warning Check script"
-    echo "   Original Author: Raphael Defosseux"
     echo ""
     echo "Usage:"
     echo "------"

ci-scripts/checkCodingFormattingRules.sh

@@ -22,7 +22,6 @@
 
 function usage {
     echo "OAI Coding / Formatting Guideline Check script"
-    echo "   Original Author: Raphael Defosseux"
     echo ""
     echo "   By default (no options) the complete repository will be checked"
     echo "   In case of merge request, provided source and target branch,"

ci-scripts/checkGitLabMergeRequestLabels.sh

@@ -22,7 +22,6 @@
 
 function usage {
     echo "OAI GitLab merge request applying script"
-    echo "   Original Author: Raphael Defosseux"
     echo ""
     echo "Usage:"
     echo "------"

ci-scripts/doGitLabMerge.sh

@@ -22,7 +22,6 @@
 
 function usage {
     echo "OAI GitLab merge request applying script"
-    echo "   Original Author: Raphael Defosseux"
     echo ""
     echo "Usage:"
     echo "------"