Remove scala imports from Granularity.java (Sql4D Compiler)

[tfindlay-au]

I've removed this dependency for my project, I think it should be removed from the main branch unless 100% necessary and there is no possible other alternative.

Otherwise this single class bloats the project significantly requiring a lot of additional overheard.

Don't get me wrong, I love Scala, but I don't use it for everything and deploy it with the JRE just for fun.

PS. I recognize Scala is used extensively in Sql4D Driver and other project, which is fair enough. But it annoys me that a single class in the Sql4D Compiler uses it.