Fix warnings?

Author: Happypig375

CSharpMath.Rendering/PublicAPI.Unshipped.txt

@@ -395,11 +395,6 @@ override CSharpMath.Rendering.Text.TextAtom.Style.SingleChar(CSharpMath.Atom.Fon
 override CSharpMath.Rendering.Text.TextAtom.Text.Equals(CSharpMath.Rendering.Text.TextAtom! atom) -> bool
 override CSharpMath.Rendering.Text.TextAtom.Text.GetHashCode() -> int
 override CSharpMath.Rendering.Text.TextAtom.Text.SingleChar(CSharpMath.Atom.FontStyle style) -> int?
-override Typography.OpenFont.Bounds.ToString() -> string!
-override Typography.OpenFont.CFF.Cff1GlyphData.ToString() -> string!
-override Typography.OpenFont.Glyph.ToString() -> string!
-override Typography.OpenFont.GlyphPointF.ToString() -> string!
-override Typography.OpenFont.MathGlyphs.GlyphPartRecord.ToString() -> string!
 override Typography.OpenFont.MathGlyphs.MathGlyphVariantRecord.ToString() -> string!
 override Typography.OpenFont.MathGlyphs.MathKern.ToString() -> string!
 override Typography.OpenFont.MathGlyphs.MathValueRecord.ToString() -> string!
@@ -2691,4 +2686,4 @@ virtual Typography.TextBreak.NewWordBreakHandlerDelegate.Invoke(Typography.TextB
 virtual Typography.TextBreak.WordVisitor.OnBreak() -> void
 virtual Typography.TextBreak.WordVisitor.SpanBreakInfo.get -> Typography.TextBreak.SpanBreakInfo!
 virtual Typography.TextBreak.WordVisitor.SpanBreakInfo.set -> void
-virtual Typography.TextLayout.GlyphLayout.GlyphNotFoundHandler.Invoke(Typography.TextLayout.GlyphLayout! glyphLayout, int codepoint, int nextcodepoint) -> ushort
+virtual Typography.TextLayout.GlyphLayout.GlyphNotFoundHandler.Invoke(Typography.TextLayout.GlyphLayout! glyphLayout, int codepoint, int nextcodepoint) -> ushort