Do not force new line in body for empty functions and function expressions (KT-10828)

#KT-10828 Fixed

idea/testData/copyPaste/plainTextConversion/MembersIntoClass.expected.kt

@@ -6,7 +6,6 @@ class A {
         list.add(1)
     }
 
-    fun bar() {
-    }
+    fun bar() {}
 
 }

idea/testData/copyPaste/plainTextConversion/MembersToTopLevel.expected.kt

@@ -8,5 +8,4 @@ fun foo() {
     list.add(1)
 }
 
-fun bar() {
-}
+fun bar() {}

idea/testData/copyPaste/plainTextConversion/Override.expected.kt

@@ -1,6 +1,5 @@
 import test.JavaParent
 
 class KotlinChild : JavaParent() {
-    override fun subject() {
-    }
+    override fun subject() {}
 }

idea/testData/copyPaste/plainTextConversion/OverrideInterface.expected.kt

@@ -1,6 +1,5 @@
 import test.JavaInterface
 
 class KotlinChild : JavaInterface() {
-    override fun subject(s: String?) {
-    }
+    override fun subject(s: String?) {}
 }