remove unused assignment: do not move the transformed statement up as it could change the semantic and is not evident (IDEA-123841)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/unusedAssignment/afterSideEffect.java

@@ -0,0 +1,15 @@
+// "Remove redundant assignment" "true"
+class A {
+  A a = null;
+  String m(String str) {
+    return str;
+  }
+
+  {
+    String ss = "";
+
+    System.out.println();
+
+      a.m(ss);
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/unusedAssignment/beforeSideEffect.java

@@ -0,0 +1,15 @@
+// "Remove redundant assignment" "true"
+class A {
+  A a = null;
+  String m(String str) {
+    return str;
+  }
+
+  {
+    String ss = "";
+
+    System.out.println();
+
+    s<caret>s = a.m(ss);
+  }
+}