Unused symbol: remove forced "used" from actual declarations

Now we really check whether actual declaration has usages
(in expect or actual code) or not
Related to KT-17512
Related to KT-15666

idea/testData/multiModuleQuickFix/safeDeleteForbiddenFromActual/common/common.kt

@@ -0,0 +1,7 @@
+expect class My constructor() {
+    fun foo()
+}
+
+fun test() {
+    My().foo()
+}

idea/testData/multiModuleQuickFix/safeDeleteForbiddenFromActual/common/common.kt.after

@@ -0,0 +1,7 @@
+expect class My constructor() {
+    fun foo()
+}
+
+fun test() {
+    My().foo()
+}

idea/testData/multiModuleQuickFix/safeDeleteForbiddenFromActual/jvm/jvm.kt

@@ -0,0 +1,8 @@
+// "Safe delete 'foo'" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.UnusedSymbolInspection
+// ACTION: Convert member to extension
+// ACTION: Move to companion object
+
+actual class My {
+    actual fun <caret>foo() {}
+}

idea/testData/multiModuleQuickFix/safeDeleteForbiddenFromActual/jvm/jvm.kt.after

@@ -0,0 +1,8 @@
+// "Safe delete 'foo'" "false"
+// TOOL: org.jetbrains.kotlin.idea.inspections.UnusedSymbolInspection
+// ACTION: Convert member to extension
+// ACTION: Move to companion object
+
+actual class My {
+    actual fun foo() {}
+}

idea/testData/multiModuleQuickFix/safeDeleteFromActual/common/common.kt

@@ -0,0 +1,4 @@
+expect class My constructor() {
+    // TODO: also should be deleted (KT-15666)
+    fun foo()
+}

idea/testData/multiModuleQuickFix/safeDeleteFromActual/common/common.kt.after

@@ -0,0 +1,4 @@
+expect class My constructor() {
+    // TODO: also should be deleted (KT-15666)
+    fun foo()
+}

idea/testData/multiModuleQuickFix/safeDeleteFromActual/jvm/jvm.kt

@@ -0,0 +1,6 @@
+// "Safe delete 'foo'" "true"
+// TOOL: org.jetbrains.kotlin.idea.inspections.UnusedSymbolInspection
+
+actual class My {
+    actual fun <caret>foo() {}
+}

idea/testData/multiModuleQuickFix/safeDeleteFromActual/jvm/jvm.kt.after

@@ -0,0 +1,5 @@
+// "Safe delete 'foo'" "true"
+// TOOL: org.jetbrains.kotlin.idea.inspections.UnusedSymbolInspection
+
+actual class My {
+}