Remove unnecessary lambda block

Author: garydgregory

src/test/java/org/apache/commons/lang3/RangeTest.java

@@ -43,9 +43,11 @@ public int compareTo(final AbstractComparable o) {
             return 0;
         }
     }
+
     static final class DerivedComparableA extends AbstractComparable {
         // empty
     }
+
     static final class DerivedComparableB extends AbstractComparable {
         // empty
     }
@@ -193,9 +195,7 @@ void testFit() {
 
     @Test
     void testFitNull() {
-        assertNullPointerException(() -> {
-            intRange.fit(null);
-        });
+        assertNullPointerException(() -> intRange.fit(null));
     }
 
     @Test