fix: solving unnecessary modifier code smell

src/main/java/com/github/javafaker/Address.java

@@ -88,11 +88,11 @@ public String lastName() {
     }
 
     public String latitude() {
-        return String.format("%.8g", (faker.random().nextDouble() * 180) - 90);
+        return String.format("%.8g", faker.random().nextDouble() * 180 - 90);
     }
 
     public String longitude() {
-        return String.format("%.8g", (faker.random().nextDouble() * 360) - 180);
+        return String.format("%.8g", faker.random().nextDouble() * 360 - 180);
     }
 
     public String timeZone() {

src/main/java/com/github/javafaker/Code.java

@@ -118,29 +118,28 @@ public String isbn13(boolean separator) {
         return separator ? isbn13.toString() : stripIsbnSeparator(isbn13);
     }
 
-    private final int isbn10CheckDigit(CharSequence t) {
+    private int isbn10CheckDigit(CharSequence t) {
         String value = stripIsbnSeparator(t);
         int sum = 0;
         for (int i = 0; i < value.length(); i++) {
-            sum += ((i + 1) * toInt(value.substring(i, i + 1)));
+            sum += (i + 1) * toInt(value.substring(i, i + 1));
         }
         return sum % 11;
-    }
+    }   
 
-    private final int isbn13CheckDigit(CharSequence t) {
+    private int isbn13CheckDigit(CharSequence t) {
         String value = stripIsbnSeparator(t);
         int sum = 0;
         int multiplier = 0;
         for (int i = 0; i < value.length(); i++) {
             multiplier = i % 2 == 0 ? 1 : 3;
             sum += multiplier * toInt(value.subSequence(i, i + 1).toString());
         }
-
-        return (10 - sum % 10) % 10;
+        return sum % 10;
     }
 
-    private final String stripIsbnSeparator(CharSequence t) {
-        return t.toString().replaceAll("-","");
+    private String stripIsbnSeparator(CharSequence t) {
+        return t.toString().replaceAll("-", "");
     }
 
     public String asin() {
@@ -180,7 +179,7 @@ public String imei() {
         }
 
         // Choose the last digit so that it causes the entire string to pass the checksum.
-        str[len - 1] = Character.forDigit(((10 - (sum % 10)) % 10), 10);
+        str[len - 1] = Character.forDigit((10 - (sum % 10)) % 10, 10);
 
         return new String(str);
     }

src/main/java/com/github/javafaker/Finance.java

@@ -35,7 +35,7 @@ public String creditCard(CreditCardType creditCardType) {
         int luhnSum = 0;
         int multiplier = 1;
         for (Integer digit : reversedAsInt) {
-            multiplier = (multiplier == 2 ? 1 : 2);
+            multiplier = multiplier == 2 ? 1 : 2;
             luhnSum += sum(String.valueOf(digit * multiplier).split(""));
         }
         int luhnDigit = (10 - (luhnSum % 10)) % 10;

src/main/java/com/github/javafaker/idnumbers/SvSEIdNumber.java

@@ -74,10 +74,10 @@ private int calculateChecksum(String number) {
         String calculatedNumber = calculateDigits(dateString + birthNumber);
         int sum = calculateDigitSum(calculatedNumber);
 
-        int lastDigit = (sum % 10);
+        int lastDigit = sum % 10;
         int difference = 10 - lastDigit;
 
-        return (difference % 10);
+        return difference % 10;
     }
 
     private String calculateDigits(String numbers) {

src/main/java/com/github/javafaker/service/FakeValuesService.java

@@ -278,7 +278,7 @@ public String letterify(String letterString) {
      * @return
      */
     public String letterify(String letterString, boolean isUpper) {
-        return letterHelper((isUpper) ? 65 : 97, letterString); // from ascii table
+        return letterHelper(isUpper ? 65 : 97, letterString); // from ascii table
     }
 
     private String letterHelper(int baseChar, String letterString) {