Add MutableMap.remove(K, V) as built-in declaration

Use PlatformDependent annotation to guarantee it's only be available for JDK8
Also adjust type-safe bridges and mutable collection stubs generation

compiler/testData/diagnostics/testsWithJava8/targetedBuiltIns/mutableMapRemove.kt

@@ -0,0 +1,29 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -PARAMETER_NAME_CHANGED_ON_OVERRIDE
+
+class KotlinMap1<K, V> : java.util.AbstractMap<K, V>() {
+    override val entries: MutableSet<MutableMap.MutableEntry<K, V>>
+        get() = throw UnsupportedOperationException()
+
+    override fun remove(x: K, y: V) = true
+}
+
+class KotlinMap2 : java.util.AbstractMap<String, Int>() {
+    override val entries: MutableSet<MutableMap.MutableEntry<String, Int>>
+        get() = throw UnsupportedOperationException()
+
+    override fun remove(x: String, y: Int) = true
+}
+
+fun foo(x: MutableMap<String, Int>, y: java.util.HashMap<String, Int>, z: java.util.AbstractMap<String, Int>) {
+    x.remove("", 1)
+    x.remove("", <!TYPE_MISMATCH!>""<!>)
+    x.remove("", <!NULL_FOR_NONNULL_TYPE!>null<!>)
+
+    y.remove("", 1)
+    y.remove("", <!TYPE_MISMATCH!>""<!>)
+    y.remove("", <!NULL_FOR_NONNULL_TYPE!>null<!>)
+
+    z.remove("", 1)
+    z.remove("", <!TYPE_MISMATCH!>""<!>)
+    z.remove("", null)
+}