Revert "SONAR-5051 Support Maven encryption mechanism for SonarQube passwords"

This reverts commit 854f66c3360141bcdd5c59dd5b6215472ee8ca17.
[maven-release-plugin] prepare release 4.3-RC2
[maven-release-plugin] prepare for next development iteration
Release 4.3
[SONAR-5235] : Test deployment without the phase verify
Update version to 4.3.1-SNAPSHOT
SONAR-5320 When hours in day property has been overload, some migrations are failing
SONAR-5320 On some Oracle DB, saving a number in properties.text_value fails -> it have to be converted in string
SONAR-5320 Property "sonar.technicalDebt.hoursInDay" were not been taking into account when migrating issues and measures from hours to minutes
SONAR-5335 When upgrading from SonarQube 4.2 with PMD 2.1, searching for some Java rules is failing
Release 4.3.1
Update version to 4.3.2-SNAPSHOT