Revert "Added unittest for the test case in to check the performOperation function's ability to perform addition. Includes arranging operands, performing addition, and asserting the expected result."

This reverts commit d3f2d7ec6b.

src/test/c/test_taschenrechner.c

@@ -156,52 +156,4 @@ void test_exponentialFunction(void) {
     TEST_ASSERT_EQUAL_FLOAT(1.0, exponentialFunction(0.0));
 }
 
-// addition with two numbers
-void test_performOperation_Addition(void) {
-    // Arrange
-    int result;
-
-    // Act
-    result = performOperation(5, '+', 3);
-
-    // Assert
-    TEST_ASSERT_EQUAL_INT(8, result);
-}
-
-// Test case for subtraction
-void test_performOperation_Subtraction(void) {
-    // Arrange
-    int result;
-
-    // Act
-    result = performOperation(10, '-', 3);
-
-    // Assert
-    TEST_ASSERT_EQUAL_INT(7, result);
-}
-
-// Test case for multiplication
-void test_performOperation_Multiplication(void) {
-    // Arrange
-    int result;
-
-    // Act
-    result = performOperation(4, '*', 6);
-
-    // Assert
-    TEST_ASSERT_EQUAL_INT(24, result);
-}
-
-// Test case for division
-void test_performOperation_Division(void) {
-    // Arrange
-    int result;
-
-    // Act
-    result = performOperation(8, '/', 2);
-
-    // Assert
-    TEST_ASSERT_EQUAL_INT(4, result);
-}
-
 #endif // TEST