delete old inference strategy for java 8

java/java-tests/testData/refactoring/introduceVariable/CantCollapsedToDiamond.after.java

@@ -1,6 +1,6 @@
 class Test {
   void foo() {
-      final Foo<Number> a = new Foo<Number>(1);
+      final Foo<Number> a = new Foo<>(1);
   }
 }
 

java/java-tests/testData/refactoring/introduceVariable/LambdaExprNotAccepted.after.java

@@ -4,7 +4,7 @@ interface SAM<X> {
 
 class Foo {  
     void test() {
-        SAM<String> c = (i, j) -> "" + i + j;
+        SAM<X> c = (i, j) -> "" + i + j;
         SAM<Integer> s3 = m(c);
     }
     <X> SAM<X> m(SAM<X> s) { return null; }