Remove deprecated instantiation of wrapper classes for primitives

CustomizedGitHooks: yes
Change-Id: I3e461e53d73b9f3a0cc8f76906e65294acd65067

Author: SwapnilGaikwad

compiler/src/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/GraalHotSpotVMConfigAccess.java

@@ -378,7 +378,6 @@ public <T> T getFlag(String name, Class<T> type) {
     /**
      * @see HotSpotVMConfigAccess#getFlag(String, Class, Object)
      */
-    @SuppressWarnings("deprecation")
     public <T> T getFlag(String name, Class<T> type, T notPresent, boolean expectPresent) {
         if (expectPresent) {
             return getFlag(name, type);
@@ -391,13 +390,13 @@ public <T> T getFlag(String name, Class<T> type, T notPresent, boolean expectPre
             // overhead when running with assertions enabled.
             T sentinel;
             if (type == Boolean.class) {
-                sentinel = type.cast(new Boolean(false));
+                sentinel = type.cast(Boolean.valueOf(false));
             } else if (type == Byte.class) {
-                sentinel = type.cast(new Byte((byte) 123));
+                sentinel = type.cast(Byte.valueOf((byte) 123));
             } else if (type == Integer.class) {
-                sentinel = type.cast(new Integer(1234567890));
+                sentinel = type.cast(Integer.valueOf(1234567890));
             } else if (type == Long.class) {
-                sentinel = type.cast(new Long(1234567890987654321L));
+                sentinel = type.cast(Long.valueOf(1234567890987654321L));
             } else if (type == String.class) {
                 sentinel = type.cast(new String("1234567890987654321"));
             } else {