Redundant arrow: support removing of 'it ->' #KT-28631 Fixed

idea/testData/inspectionsLocal/redundantLambdaArrow/it.kt

@@ -0,0 +1,10 @@
+fun foo(f: (String) -> Unit) {}
+
+fun print(s: String) {}
+
+fun bar() {
+    foo { <caret>it ->
+        print(it)
+        print(it)
+    }
+}

idea/testData/inspectionsLocal/redundantLambdaArrow/it.kt.after

@@ -0,0 +1,10 @@
+fun foo(f: (String) -> Unit) {}
+
+fun print(s: String) {}
+
+fun bar() {
+    foo {
+        print(it)
+        print(it)
+    }
+}

idea/testData/inspectionsLocal/redundantLambdaArrow/underscore.kt

@@ -1,4 +1,4 @@
-fun foo(f: () -> Unit) {}
+fun foo(f: (String) -> Unit) {}
 
 fun bar() {
     foo { <caret>_ -> }

idea/testData/inspectionsLocal/redundantLambdaArrow/underscore.kt.after

@@ -1,4 +1,4 @@
-fun foo(f: () -> Unit) {}
+fun foo(f: (String) -> Unit) {}
 
 fun bar() {
     foo { <caret>}