refactor(sointu): move engineeringTime helper function to the file where it is actually used

patch.go

@@ -195,3 +195,12 @@ func (p Patch) ParamHintString(instrIndex, unitIndex int, param string) string {
 	}
 	return ""
 }
+
+func engineeringTime(sec float64) string {
+	if sec < 1e-3 {
+		return fmt.Sprintf("%.2f us", sec*1e6)
+	} else if sec < 1 {
+		return fmt.Sprintf("%.2f ms", sec*1e3)
+	}
+	return fmt.Sprintf("%.2f s", sec)
+}

unittype.go

@@ -1,7 +1,6 @@
 package sointu
 
 import (
-	"fmt"
 	"math"
 )
 
@@ -14,15 +13,6 @@ type UnitParameter struct {
 	CanModulate bool   // if this parameter can be modulated i.e. has a port number in "send" unit
 }
 
-func engineeringTime(sec float64) string {
-	if sec < 1e-3 {
-		return fmt.Sprintf("%.2f us", sec*1e6)
-	} else if sec < 1 {
-		return fmt.Sprintf("%.2f ms", sec*1e3)
-	}
-	return fmt.Sprintf("%.2f s", sec)
-}
-
 // UnitTypes documents all the available unit types and if they support stereo variant
 // and what parameters they take.
 var UnitTypes = map[string]([]UnitParameter){