[ruby/bigdecimal] Remove taint checking

This removes the taint checking.  Taint support is deprecated in
Ruby 2.7 and has no effect.  I don't think removing the taint
checks in earlier ruby versions will cause any problems.

https://github.com/ruby/bigdecimal/commit/1918d466f3

1 files changed, 0 insertions, 9 deletions

diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb
index f6ef88e3f5..dff390b0cc 100644
--- a/test/bigdecimal/test_bigdecimal.rb
+++ b/test/bigdecimal/test_bigdecimal.rb
@@ -155,15 +155,6 @@ class TestBigDecimal < Test::Unit::TestCase
     end
   end
 
-  def test_BigDecimal_with_tainted_string
-    Thread.new {
-      $SAFE = 1
-      BigDecimal('1'.taint)
-    }.join
-  ensure
-    $SAFE = 0
-  end
-
   def test_BigDecimal_with_exception_keyword
     assert_raise(ArgumentError) {
       BigDecimal('.', exception: true)