drop some unnecessary imports

Author: hpratt

src/main/kotlin/step/rsemquant.kt

@@ -1,19 +1,12 @@
 package step
-import mu.KotlinLogging
+
 import util.*
 import java.nio.file.*
 import util.CmdRunner
-import java.io.BufferedReader
-import java.io.FileReader
-import com.squareup.moshi.Moshi
 import java.io.File
-import java.time.LocalDate
 import java.util.*
 import kotlin.io.createTempDir
 
-private val log = KotlinLogging.logger {}
-var moshi = Moshi.Builder().build()
-
 data class RSEMParameters (
     val index: Path,
     val bam: Path,