Removing usages of tuples from test data

(KT-2358 Drop tuples)
 #KT-2358 In progress

compiler/testData/loadJava/MethodTypePOneUpperBound.kt

@@ -1,5 +1,5 @@
 package test
 
 public open class MethodTypePOneUpperBound() : java.lang.Object() {
-    public open fun <T : Cloneable?> bar() : Unit = #()
+    public open fun <T : Cloneable?> bar() : Unit = Unit.VALUE
 }

compiler/testData/loadJava/MethodWithTypeP.kt

@@ -1,5 +1,5 @@
 package test
 
 public class MethodWithTypeP() : java.lang.Object() {
-    public fun <P> f() : Unit = #()
+    public fun <P> f() : Unit = Unit.VALUE
 }

compiler/testData/loadJava/MethodWithTypePP.kt

@@ -1,5 +1,5 @@
 package test
 
 public class MethodWithTypePP() : java.lang.Object() {
-    public fun <P, Q : P> f() : Unit = #()
+    public fun <P, Q : P> f() : Unit = Unit.VALUE
 }

compiler/testData/loadJava/MethodWithTypePRefClassP.kt

@@ -1,5 +1,5 @@
 package test
 
 public open class MethodWithTypePRefClassP<P>() : java.lang.Object() {
-    public fun <Q : P> f() : Unit = #()
+    public fun <Q : P> f() : Unit = Unit.VALUE
 }

compiler/testData/loadJava/MethosWithPRefTP.kt

@@ -1,5 +1,5 @@
 package test
 
 public final class MethosWithPRefTP() : java.lang.Object() {
-    public fun <P> f(p0: P?) : Unit = #()
+    public fun <P> f(p0: P?) : Unit = Unit.VALUE
 }

compiler/testData/loadJava/vararg/VarargInt.kt

@@ -1,5 +1,5 @@
 package test
 
 public open class VarargInt() : java.lang.Object() {
-    public open fun vararg(vararg p0: Int): Unit = #()
+    public open fun vararg(vararg p0: Int): Unit = Unit.VALUE
 }

compiler/testData/loadJava/vararg/VarargString.kt

@@ -1,5 +1,5 @@
 package test
 
 public open class VarargString() : java.lang.Object() {
-    public open fun vararg(vararg p0: String?): Unit = #()
+    public open fun vararg(vararg p0: String?): Unit = Unit.VALUE
 }