Revert "Use SNAPSHOT to add SBT compatibility"

[martinsawicki]

Reverts #1237 --- looks like this change broke the compilation of several projects after I synched with master locally, so reverting till we get to the bottom of this one.

[azuresdkci]

Can one of the admins verify this patch?

[jianghaolu]

#1237 passes CI so the build shouldn't be a problem.

however, there are a few tricks to get SNAPSHOT working locally, especially in IDE. (That's why the reason I started using exact date versions instead of "SNAPSHOT" in the beginning)

If you do a mvn compile -U and it works, then the project has no compilation issues.

[martinsawicki]

thanks, mvn compile -U, followed by Project Clean fixed the project compilation problems in Eclipse.
So closing the Revert PR.