Reuse Java safe delete for non-local functions in Kotlin

idea/testData/safeDelete/deleteFunction/kotlinFunction/localFun1.kt

@@ -0,0 +1,7 @@
+fun foo() {
+    fun <caret>bar() {
+
+    }
+
+    bar()
+}

idea/testData/safeDelete/deleteFunction/kotlinFunction/localFun1.kt.messages

@@ -0,0 +1 @@
+function foo.bar has 1 usage that is not safe to delete.

idea/testData/safeDelete/deleteFunction/kotlinFunction/localFun2.kt

@@ -0,0 +1,7 @@
+fun foo() {
+    fun <caret>bar() {
+
+    }
+
+    println()
+}

idea/testData/safeDelete/deleteFunction/kotlinFunction/localFun2.kt.after

@@ -0,0 +1,4 @@
+fun foo() {
+
+    println()
+}

idea/testData/safeDelete/deleteFunction/kotlinFunction/overrideAndImplement3.kt

@@ -0,0 +1,15 @@
+open class A {
+    open fun foo() {
+
+    }
+}
+
+trait Z {
+    fun <caret>foo()
+}
+
+class B: A, Z {
+    override fun foo() {
+
+    }
+}

idea/testData/safeDelete/deleteFunction/kotlinFunction/overrideAndImplement3.kt.after

@@ -0,0 +1,14 @@
+open class A {
+    open fun foo() {
+
+    }
+}
+
+trait Z {
+}
+
+class B: A, Z {
+    override fun foo() {
+
+    }
+}