refactoring: removed unnecessary description

src/arithmeticSubtraction.c

@@ -2,19 +2,19 @@
 #include "arithmeticSubtraction.h"
 
 #include <stdlib.h>
-//arithmetic Subtraction specification integer 1 function
+//arithmetic Subtraction specification integer
 int* subtraction_integer(int a, int b) {
     int* result= malloc(sizeof (int));
     *result=a - b;
     return result;
 }
-//arithmetic Subtraction specification float 2 function
+//arithmetic Subtraction specification float
 float* subtraction_float(float a, float b) {
     float* result= malloc(sizeof (float));
     *result=a - b;
     return result;
 }
-//arithmetic Subtraction specification double 3 function
+//arithmetic Subtraction specification double
 double* subtraction_double(double a, double b) {
     double* result= malloc(sizeof (double));
     *result=a - b;