Move require statement to the correct file

src/invidious/helpers/utils.cr

@@ -1,5 +1,3 @@
-require "csv"
-
 # See http://www.evanmiller.org/how-not-to-sort-by-average-rating.html
 def ci_lower_bound(pos, n)
   if n == 0

src/invidious/user/imports.cr

@@ -1,3 +1,5 @@
+require "csv"
+
 def parse_subscription_export_csv(csv_content : String)
   rows = CSV.new(csv_content, headers: true)
   subscriptions = Array(String).new