PMD fix

Author: varada610

pmd-exclude.properties

@@ -46,7 +46,6 @@ com.thealgorithms.maths.KaprekarNumbers=UselessParentheses
 com.thealgorithms.maths.KeithNumber=UselessParentheses
 com.thealgorithms.maths.LeonardoNumber=UselessParentheses
 com.thealgorithms.maths.LinearDiophantineEquationsSolver=UselessParentheses
-com.thealgorithms.maths.MatrixUtil=UselessParentheses
 com.thealgorithms.maths.RomanNumeralUtil=UselessParentheses
 com.thealgorithms.maths.SecondMinMax=UselessParentheses
 com.thealgorithms.maths.SecondMinMaxTest=UnnecessaryFullyQualifiedName

src/main/java/com/thealgorithms/matrix/matrixexponentiation/Fibonacci.java

@@ -18,8 +18,6 @@ private Fibonacci() {
 
     private static final BigDecimal[][] FIB_MATRIX = {{ONE, ONE}, {ONE, ZERO}};
     private static final BigDecimal[][] IDENTITY_MATRIX = {{ONE, ZERO}, {ZERO, ONE}};
-    // First 2 fibonacci numbers
-    private static final BigDecimal[][] BASE_FIB_NUMBERS = {{ONE}, {ZERO}};
 
     /**
      * Calculates the fibonacci number using matrix exponentiaition technique