Revert "Fetch genotype file via HTTPS"

This reverts commit 433e7a5.

app/workers/parsing.rb

@@ -1,7 +1,5 @@
 class Parsing
   include Sidekiq::Worker
-  GENOTYPE_FILE_BASE_URL = 'https://opensnp.org'
-
   sidekiq_options queue: :user_snps, retry: 5, unique: true
 
   attr_reader :genotype, :temp_table_name, :normalized_csv, :stats, :start_time
@@ -43,8 +41,8 @@ def create_temp_table
   end
 
   def normalize_csv
-    rows = genotype_file.each_line
-                        .reject { |line| line.start_with?('#') } # Skip comments
+    rows = File.readlines(genotype.genotype.path)
+      .reject { |line| line.start_with?('#') } # Skip comments
     stats[:rows_without_comments] = rows.length
     csv = send(:"parse_#{genotype.filetype.gsub('-', '_').downcase}", rows)
     known_chromosomes = ['MT', 'X', 'Y', (1..22).map(&:to_s)].flatten
@@ -62,14 +60,6 @@ def normalize_csv
     stats[:rows_after_parsing] = csv.length
   end
 
-  def genotype_file
-    if Rails.env.production?
-      open("#{GENOTYPE_FILE_BASE_URL}#{genotype.genotype.url}")
-    else
-      open(genotype.genotype.path)
-    end
-  end
-
   def copy_csv_into_temp_table
     sql = <<-SQL
       COPY #{temp_table_name} (