Delete outdated todo comment (#36224)

diff --git a/src/libraries/System.Runtime.Numerics/src/System/Numerics/BigInteger.cs b/src/libraries/System.Runtime.Numerics/src/System/Numerics/BigInteger.cs
index 123453cdfaf215aa57015667f072be5499a14f3d..494b0531dcb36bff2197701738aca4cdeaefc246 100644 (file)
--- a/src/libraries/System.Runtime.Numerics/src/System/Numerics/BigInteger.cs
+++ b/src/libraries/System.Runtime.Numerics/src/System/Numerics/BigInteger.cs
@@ -1477,7 +1477,7 @@ namespace System.Numerics
             return BigNumber.FormatBigInteger(this, format, NumberFormatInfo.GetInstance(provider));
         }
 
-        public bool TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format = default, IFormatProvider? provider = null) // TODO: change format to ReadOnlySpan<char>
+        public bool TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return BigNumber.TryFormatBigInteger(this, format, NumberFormatInfo.GetInstance(provider), destination, out charsWritten);
         }