Revert "Update version to 2.0-SNAPSHOT"
Revert "Update version to 2.0-SNAPSHOT"

It turned out, that maintaining 1.x on a separate branch is the horror.
Now the plan is to support OSIAM < 2.3, >= 2.5 and >= 3.0 on the master
branch with a version of 1.x.

This reverts commit 80eb8b5f24053cc1d391a8ff5c9f57a3fb5065e2.

osiam/connector4java