RedundantStringOperationInspection: fixes after review IDEA-CR-25339

1. messages cleanup
2. new StringBuilder(""). PrintStream.println("") are warned

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/afterPrintlnEmpty.java

@@ -0,0 +1,6 @@
+// "Delete element" "true"
+class Foo {
+  public static void main(String[] args) {
+    System.out.println();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/afterStringBuilderAppendEmpty.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'append' call" "true"
+// "Remove redundant 'append()' call" "true"
 class Foo {
   public static void main(String[] args) {
     StringBuilder sb = new StringBuilder();

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/afterStringBuilderEmpty.java

@@ -0,0 +1,6 @@
+// "Delete element" "true"
+class Foo {
+  public static void main(String[] args) {
+    StringBuilder s = new StringBuilder();
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/afterStringIntern.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'intern' call" "true"
+// "Remove redundant 'intern()' call" "true"
 class Foo {
   private static final String x = ("Hello "+"World"+'!');
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/afterStringToString.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'toString' call" "true"
+// "Remove redundant 'toString()' call" "true"
 class Foo {
   public static void main(String[] args) {
       /*valuable comment!!!*/

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeObjectToString.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'toString' call" "false"
+// "Remove redundant 'toString()' call" "false"
 class Foo {
   public static void main(String[] args) {
     Object[] a = args;

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforePrintlnEmpty.java

@@ -0,0 +1,6 @@
+// "Delete element" "true"
+class Foo {
+  public static void main(String[] args) {
+    System.out.println("<caret>");
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeStringBuilderAppendEmpty.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'append' call" "true"
+// "Remove redundant 'append()' call" "true"
 class Foo {
   public static void main(String[] args) {
     StringBuilder sb = new StringBuilder();

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeStringBuilderEmpty.java

@@ -0,0 +1,6 @@
+// "Delete element" "true"
+class Foo {
+  public static void main(String[] args) {
+    StringBuilder s = new StringBuilder(("<caret>"));
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeStringIntern.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'intern' call" "true"
+// "Remove redundant 'intern()' call" "true"
 class Foo {
   private static final String x = ("Hello "+"World"+'!').inte<caret>rn();
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeStringInternNonConst.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'intern' call" "false"
+// "Remove redundant 'intern()' call" "false"
 class Foo {
   private static final String x = ("Hello "+"World".trim()+'!').inte<caret>rn();
 }

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantStringOperation/beforeStringToString.java

@@ -1,4 +1,4 @@
-// "Remove redundant 'toString' call" "true"
+// "Remove redundant 'toString()' call" "true"
 class Foo {
   public static void main(String[] args) {
     String s = args[0].toString<caret>(/*valuable comment!!!*/);