refactor: remove third parameter

Author: evilebottnawi

src/lib/transform.js

@@ -21,7 +21,7 @@ function transformValue(value, options, result, item) {
 
     // reduce AST to its simplest form, that is, either to a single value
     // or a simplified calc expression
-    const reducedAst = reducer(ast, options.precision, item);
+    const reducedAst = reducer(ast, options.precision);
 
     // stringify AST and write it back
     node.type = 'word';