Remove wrong test case

Author: reck1610

src/CommunityToolkit.Maui.UnitTests/Converters/ColorToRgbaStringConverterTests.cs

@@ -163,20 +163,6 @@ public void ColorToRgbStringConverterConvertBackValidInputTest(float red, float
 		AssertColorComparison(expectedResult, resultConvertBackTo);
 	}
 
-	[Fact]
-	public void ColorToRgbStringConverterCultureTest()
-	{
-		var expectedResult = "RGBA(0,0,0,0,5)";
-		var converter = new ColorToRgbaStringConverter();
-		var color = new Color(0, 0, 0, 0.5f);
-
-		var resultConvert = ((ICommunityToolkitValueConverter)converter).Convert(color, typeof(string), null, new System.Globalization.CultureInfo("uk-UA"));
-		var resultConvertFrom = converter.ConvertFrom(color, new System.Globalization.CultureInfo("uk-UA"));
-
-		Assert.Equal(expectedResult, resultConvert);
-		Assert.Equal(expectedResult, resultConvertFrom);
-	}
-
 	[Fact]
 	public void ColorToRgbStringConverterNullInputTest()
 	{