Adjust various testData to size transformation

compiler/testData/diagnostics/tests/library/Collections.kt

@@ -1,7 +1,7 @@
 package collections
 
 fun <T> testCollection(c: Collection<T>, t: T) {
-    c.size()
+    c.size
     c.isEmpty()
     c.contains(1)
     val <!UNUSED_VARIABLE!>iterator<!>: Iterator<T> = c.iterator()
@@ -17,7 +17,7 @@ fun <T> testCollection(c: Collection<T>, t: T) {
 
 }
 fun <T> testMutableCollection(c: MutableCollection<T>, t: T) {
-    c.size()
+    c.size
     c.isEmpty()
     c.contains(1)
     val <!UNUSED_VARIABLE!>iterator<!>: Iterator<T> = c.iterator()
@@ -59,7 +59,7 @@ fun <T> testMutableList(l: MutableList<T>, t: T) {
 }
 
 fun <T> testSet(s: Set<T>, t: T) {
-    s.size()
+    s.size
     s.isEmpty()
     s.contains(1)
     val <!UNUSED_VARIABLE!>iterator<!>: Iterator<T> = s.iterator()
@@ -75,7 +75,7 @@ fun <T> testSet(s: Set<T>, t: T) {
 
 }
 fun <T> testMutableSet(s: MutableSet<T>, t: T) {
-    s.size()
+    s.size
     s.isEmpty()
     s.contains(1)
     val <!UNUSED_VARIABLE!>iterator<!>: Iterator<T> = s.iterator()