Allow empty single-line bodies in property accessors

idea/testData/codeInsight/overrideImplement/overrideMutableExtensionProperty.kt.after

@@ -5,6 +5,5 @@ interface A {
 class B : A {
     override var Int.foo: Double
         get() = <selection><caret>TODO("not implemented")</selection> //To change initializer of created properties use File | Settings | File Templates.
-        set(value) {
-        }
+        set(value) {}
 }

idea/testData/formatter/PropertyAccessors.after.kt

@@ -13,3 +13,11 @@ class Hi {
 
     var badNoType get() = 1
 }
+
+class EmptyProperties {
+    var newline: String
+        get() {
+            return ""
+        }
+        set(value) {}
+}

idea/testData/formatter/PropertyAccessors.kt

@@ -19,3 +19,9 @@ get() = 1
 
     var badNoType get() = 1
 }
+
+class EmptyProperties {
+    var newline: String
+        get() { return "" }
+        set(value) {}
+}

idea/testData/quickfix/createFromUsage/createFunction/call/extensionByExtensionReceiver/extensionPropertySetter.kt.after

@@ -13,5 +13,4 @@ private var A.foo: Boolean
     get() {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
-    set() {
-    }
+    set() {}

idea/testData/quickfix/createFromUsage/createVariable/property/varOnLibType.kt.after

@@ -11,5 +11,4 @@ private var Int.foo: A<String>
     get() {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
-    set() {
-    }
+    set() {}

idea/testData/quickfix/implement/abstract.kt.after

@@ -11,8 +11,7 @@ private abstract class Base {
 private class BaseImpl : Base() {
     override var x: Int
         get() = TODO("not implemented") //To change initializer of created properties use File | Settings | File Templates.
-        set(value) {
-        }
+        set(value) {}
 
     override fun toInt(arg: String): Int {
         TODO("not implemented") //To change body of created functions use File | Settings | File Templates.

idea/testData/quickfix/implement/nestedPrivateInterface.kt.after

@@ -10,7 +10,6 @@ class Container {
     class BaseImpl : Base {
         override var z: Double
             get() = TODO("not implemented") //To change initializer of created properties use File | Settings | File Templates.
-            set(value) {
-            }
+            set(value) {}
     }
 }