vidjil.cpp: Ignore unused variable

Use the macro UNUSED for mandatory parameters that are not
used within functions.

See #1233
8 jobs for feature-a/remove-compiler-warnings in 28 minutes and 36 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test Tools
passed #121042
test_tools

00:00:04

 
  Test Unit
passed #121043
test_algo_unit

00:02:35

passed #121044
test_tools_unit

00:00:05

 
  Test Functional
passed #121045
test_algo_should

00:10:22

 
  Test Shouldvdj
passed #121046
test_algo_shouldvdj

00:10:53

 
  Prepare Release
manual #121047
allowed to fail manual
prepare_release
 
  Valgrind Unit
passed #121048
valgrind
algo_valgrind_unit

00:04:39

 
  Valgrind Functional
manual #121049
valgrind allowed to fail manual
algo_valgrind_functional