Drop result value if it's not needed

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentUsedTwice.kt

@@ -3,6 +3,6 @@ fun <caret>f(p: Int) = p + p
 fun complexFun(): Int {
 }
 
-fun main(args: Array<String>) {
-    f(complexFun())
+fun g(): Int {
+    return f(complexFun())
 }

idea/testData/refactoring/inline/function/expressionBody/ComplexArgumentUsedTwice.kt.after

@@ -1,7 +1,7 @@
 fun complexFun(): Int {
 }
 
-fun main(args: Array<String>) {
+fun g(): Int {
     val p = complexFun()
-    p + p
+    return p + p
 }

idea/testData/refactoring/inline/function/returnAtEnd/AddBlockToControlStatement.kt.after

@@ -2,18 +2,15 @@ fun main(args: Array<String>) {
     if (args.size > 0) {
         println(1)
         println(2)
-        1 + 2
     }
     else {
         println(3)
         println(4)
-        3 + 4
     }
 
     for (i in 1..10) {
         println(0)
         println(1)
-        0 + 1
     }
 
     when (args.size) {

idea/testData/refactoring/inline/function/returnAtEnd/MultipleStatements.kt.after

@@ -1,5 +1,4 @@
 fun main(args: Array<String>) {
     println(3)
     println(5)
-    3 + 5
 }

idea/testData/refactoring/inline/function/returnAtEnd/UnusedComplicatedReturnValue.kt

@@ -0,0 +1,10 @@
+fun <caret>f(p: Int): Boolean {
+    println(p)
+    return g(p)
+}
+
+fun g(p: Int): Boolean = TODO()
+
+fun main(args: Array<String>) {
+    f(1)
+}

idea/testData/refactoring/inline/function/returnAtEnd/UnusedComplicatedReturnValue.kt.after

@@ -0,0 +1,6 @@
+fun g(p: Int): Boolean = TODO()
+
+fun main(args: Array<String>) {
+    println(1)
+    g(1)
+}

idea/testData/refactoring/inline/function/returnAtEnd/UnusedReturnValue.kt

@@ -0,0 +1,11 @@
+fun <caret>f(p: Int): Boolean {
+    println(p)
+    return p > 0
+}
+
+fun g(): Int = TODO()
+
+fun main(args: Array<String>) {
+    f(1)
+    f(g())
+}

idea/testData/refactoring/inline/function/returnAtEnd/UnusedReturnValue.kt.after

@@ -0,0 +1,6 @@
+fun g(): Int = TODO()
+
+fun main(args: Array<String>) {
+    println(1)
+    println(g())
+}