[SL.Core] Remove unused Gaurd.IsTrue and Gaurd.IsFalse

src/SixLabors.Core/Helpers/Guard.cs

@@ -169,48 +169,6 @@ namespace SixLabors
             }
         }
 
-        /// <summary>
-        /// Verifies, that the method parameter with specified target value is true
-        /// and throws an exception if it is found to be so.
-        /// </summary>
-        /// <param name="value">
-        /// The target value, which cannot be false.
-        /// </param>
-        /// <param name="parameterName">
-        /// The name of the parameter that is to be checked.
-        /// </param>
-        /// <param name="message">
-        /// The error message, if any to add to the exception.
-        /// </param>
-        /// <exception cref="ArgumentException">
-        /// <paramref name="value"/> is false
-        /// </exception>
-        public static void IsTrue(bool value, string parameterName, string message)
-        {
-            if (!value)
-            {
-                throw new ArgumentException(message, parameterName);
-            }
-        }
-
-        /// <summary>
-        /// Verifies, that the method parameter with specified target value is false
-        /// and throws an exception if it is found to be so.
-        /// </summary>
-        /// <param name="value">The target value, which cannot be true.</param>
-        /// <param name="parameterName">The name of the parameter that is to be checked.</param>
-        /// <param name="message">The error message, if any to add to the exception.</param>
-        /// <exception cref="ArgumentException">
-        /// <paramref name="value"/> is true
-        /// </exception>
-        public static void IsFalse(bool value, string parameterName, string message)
-        {
-            if (value)
-            {
-                throw new ArgumentException(message, parameterName);
-            }
-        }
-
         /// <summary>
         /// Verifies, that the `target` span has the length of 'minLength', or longer.
         /// </summary>

tests/SixLabors.Core.Tests/Helpers/GuardTests.cs

@@ -190,42 +190,6 @@ namespace SixLabors.Helpers.Tests
             Assert.True(exception.Message.Contains($"Value must be greater than or equal to {min} and less than or equal to {max}."));
         }
 
-        [Fact]
-        public void IsTrue_IsTrue_ThrowsNoException()
-        {
-            Guard.IsTrue(true, "myParamName", "myTestMessage");
-        }
-
-        [Fact]
-        public void IsTrue_IsFalse_ThrowsException()
-        {
-            var exception = Assert.Throws<ArgumentException>(() =>
-            {
-                Guard.IsTrue(false, "myParamName", "myTestMessage");
-            });
-
-            Assert.Equal("myParamName", exception.ParamName);
-            Assert.True(exception.Message.Contains("myTestMessage"));
-        }
-
-        [Fact]
-        public void IsFalse_IsFalse_ThrowsNoException()
-        {
-            Guard.IsFalse(false, "myParamName", "myTestMessage");
-        }
-
-        [Fact]
-        public void IsFalse_IsTrue_ThrowsException()
-        {
-            var exception = Assert.Throws<ArgumentException>(() =>
-            {
-                Guard.IsFalse(true, "myParamName", "myTestMessage");
-            });
-
-            Assert.Equal("myParamName", exception.ParamName);
-            Assert.True(exception.Message.Contains("myTestMessage"));
-        }
-
         [Theory]
         [InlineData(2, 1)]
         [InlineData(2, 2)]