do not explicit serialVersionUID anymore

do not explicit serialVersionUID anymore

A new SpotBug rule has been introduced in odlparent Aluminium and
suggests to explicit the serialVersionUID in serializable classes to
avoid compilers interoperability problems due to a Java implementation
design flaw.

If this is useful in a few situations (rare today), this also means that
theorically developers must maintain this field and increment it across
classes incompatible versions.
Practically, this step is often forgotten, paving the way to more
serious problems.
Since the situation here does not require it, it is healthier to simply
ignore this (soon obsolete?) recommendation.

For more details:
git log pce/src/main/java/org/opendaylight/transportpce/pce/networkanalyzer/PceLink.java
https://github.com/rzwitserloot/lombok/wiki/WHY-NOT:-serialVersionUID
https://moi.vonos.net/java/serialization-synthetic/
https://rules.sonarsource.com/java/RSPEC-4926
https://www.vojtechruzicka.com/explicitly-declare-serialversionuid/
https://www.infoworld.com/article/3275924/oracle-plans-to-dump-risky-java-serialization.html

JIRA: TRNSPRTPCE-292
Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>
Change-Id: I4e36134061104d912a75f3a578d43ca0bc17ab1f