remove the original code that added isShippingRequired

docs/changelog/7.x.x.txt

@@ -10,6 +10,7 @@
  - Fixed a problem with the file upload control where you couldn't delete the
    file if you have multiple attached.
  - fixed: Gallery album thumbnail titles now link to the image info rather than back to the album.
+ - fixed again: The bug enigmatically named "product".
 
 7.5.20
  - fixed: DataForm acknowledgement screen shows incorrect value for Date/Time fields

docs/upgrades/upgrade_7.5.18-7.5.19.pl

@@ -32,7 +32,6 @@ my $session = start(); # this line required
 renameThingyFieldsSubtextColumn( $session );
 addNewInboxIndexes( $session );
 updateAddressTable( $session );
-addProductShipping( $session );
 addGalleryImageDensity( $session );
 updatePaymentDrivers( $session );
 extendVendors($session);
@@ -114,15 +113,6 @@ sub updateAddressTable {
     print "\tDone.\n" unless $quiet;
 }
 
-#----------------------------------------------------------------------------
-# Removes the name field and adds a firstName and lastName field
-sub addProductShipping {
-    my $session = shift;
-    print "\tAdding shippingRequired to the Product table... " unless $quiet;
-    $session->db->write("ALTER TABLE Product add COLUMN isShippingRequired INT(11)");
-    print "\tDone.\n" unless $quiet;
-}
-
 #----------------------------------------------------------------------------
 # Add new indexes to the inbox to make millions of messages possible
 sub addNewInboxIndexes {