Revert "Console calculator implementation (initial commit)"

This reverts commit 78d882b0f6.

.gitignore

@@ -1,6 +0,0 @@
-.idea
-
-cmake-buid-debug
-
-# Executables
-*.exe

main.c

@@ -1,67 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-double calculate(char op, double num1, double num2) {
-    double result = 0;
-    switch (op) {
-        case '+':
-            result = num1 + num2;
-            break;
-        case '-':
-            result = num1 - num2;
-            break;
-        case '*':
-            result = num1 * num2;
-            break;
-        case '/':
-            result = num1 / num2;
-            break;
-    }
-    return result;
-}
-
-int main() {
-    double number = 0;
-    double tmpNumber = 0;
-    char input;
-    char operator;
-
-    while (1) {
-        scanf(" %c", &input);
-        switch (input) {
-            case '+':
-                operator = '+';
-                tmpNumber = number;
-                number = 0;
-                break;
-            case '-':
-                operator = '-';
-                tmpNumber = number;
-                number = 0;
-                break;
-            case '*':
-                operator = '*';
-                tmpNumber = number;
-                number = 0;
-                break;
-            case '/':
-                operator = '/';
-                tmpNumber = number;
-                number = 0;
-                break;
-            case '=':
-                printf("%lf\n", calculate(operator, tmpNumber, number));
-                tmpNumber = 0;
-                number = 0;
-                break;
-            case 'q':
-                goto exit;
-                // operator doesn't match any case constant
-            default:
-                number = (number * 10) + atof(&input);
-                printf("%.1lf\n", number);
-        }
-    }
-    exit:
-    return 0;
-}