Revert 'isEmpty' transformation

compiler/testData/codegen/box/builtinsProperties/bridges.kt

@@ -5,7 +5,7 @@ interface A0 {
 }
 
 class B0 : Collection<String>, A0 {
-    override val isEmpty: Boolean get() = throw UnsupportedOperationException()
+    override fun isEmpty() = throw UnsupportedOperationException()
     override fun contains(o: String) = throw UnsupportedOperationException()
     override fun iterator() = throw UnsupportedOperationException()
     override fun containsAll(c: Collection<String>) = throw UnsupportedOperationException()
@@ -18,7 +18,7 @@ open class A1 {
 }
 
 class B1 : Collection<String>, A1() {
-    override val isEmpty: Boolean get() = throw UnsupportedOperationException()
+    override fun isEmpty() = throw UnsupportedOperationException()
     override fun contains(o: String) = throw UnsupportedOperationException()
     override fun iterator() = throw UnsupportedOperationException()
     override fun containsAll(c: Collection<String>) = throw UnsupportedOperationException()
@@ -43,7 +43,7 @@ interface I4<T> {
 }
 
 class B4 : Collection<String>, I4<Int> {
-    override val isEmpty: Boolean get() = throw UnsupportedOperationException()
+    override fun isEmpty() = throw UnsupportedOperationException()
     override fun contains(o: String) = throw UnsupportedOperationException()
     override fun iterator() = throw UnsupportedOperationException()
     override fun containsAll(c: Collection<String>) = throw UnsupportedOperationException()
@@ -56,7 +56,7 @@ interface I5 : Collection<String> {
 }
 
 class B5 : I5 {
-    override val isEmpty: Boolean get() = throw UnsupportedOperationException()
+    override fun isEmpty() = throw UnsupportedOperationException()
     override fun contains(o: String) = throw UnsupportedOperationException()
     override fun iterator() = throw UnsupportedOperationException()
     override fun containsAll(c: Collection<String>) = throw UnsupportedOperationException()

compiler/testData/codegen/box/builtinsProperties/collectionImpl.kt

@@ -2,7 +2,7 @@ class A1 : MutableCollection<String> {
     override val size: Int
         get() = 56
 
-    override val isEmpty: Boolean get() {
+    override fun isEmpty(): Boolean {
         throw UnsupportedOperationException()
     }
 

compiler/testData/codegen/box/builtinsProperties/maps.kt

@@ -1,7 +1,7 @@
 class A : Map<String, String> {
     override val size: Int get() = 56
 
-    override val isEmpty: Boolean get() {
+    override fun isEmpty(): Boolean {
         throw UnsupportedOperationException()
     }