refactoring: simplified return statement for exponent 1

src/main/py/read_math_function.py

@@ -86,7 +86,7 @@ def simplify_exponential_function(type, function):
     if new_exponent == 0:
         return [str(new_coefficient)]
     elif new_exponent == 1:
-        result = [f"{new_coefficient}x"]
+        return [f"{new_coefficient}x"]
     else:
         result = [f"{new_coefficient}x^{new_exponent}"]
     return result