Revert "Updated Java tutorial with BigInteger and BigDecimal."

This reverts commit 8cb9e5395b.

java.html.markdown

@@ -95,13 +95,11 @@ public class LearnJava {
         // Note: Java has no unsigned types.
 
         // Float - Single-precision 32-bit IEEE 754 Floating Point
-        // 2^-149 <= float <= (2-2^-23) * 2^127
         float fooFloat = 234.5f;
         // f or F is used to denote that this variable value is of type float;
         // otherwise it is treated as double.
 
         // Double - Double-precision 64-bit IEEE 754 Floating Point
-        // 2^-1074 <= x <= (2-2^-52) * 2^1023
         double fooDouble = 123.4;
 
         // Boolean - true & false
@@ -117,34 +115,6 @@ public class LearnJava {
         final double E;
         E = 2.71828;
 
-
-        // BigInteger - Immutable arbitrary-precision integers
-        //
-        // BigInteger is a data type that allows programmers to manipulate
-        // integers longer than 64-bits. Integers are stored as an array of
-        // of bytes and are manipulated using functions built into BigInteger
-        //
-        // BigInteger can be initialized using an array of bytes or a string.
-        
-        BigInteger fooBigInteger = new BigDecimal(fooByteArray);
-
-
-        // BigDecimal - Immutable, arbitrary-precision signed decimal number
-        //
-        // A BigDecimal takes two parts: an arbitrary precision integer 
-        // unscaled value and a 32-bit integer scale
-        //
-        // BigDecimal allows the programmer complete control over decimal
-        // rounding. It is recommended to use BigDecimal with currency values
-        // and where exact decimal percision is required.
-        //
-        // BigDecimal can be initialized with an int, long, double or String
-        // or by initializing the unscaled value (BigInteger) and scale (int).
-
-        BigDecimal fooBigDecimal = new BigDecimal(fooBigInteger, fooInt);
-
-
-
         // Strings
         String fooString = "My String Is Here!";