Remove leftovers of platformName and platformStatic in test data

Drop unnecessary imports, rename some tests

compiler/testData/diagnostics/testsWithStdLib/annotations/jvmStatic/functions.kt

@@ -0,0 +1,52 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+class A {
+    companion object {
+        @JvmStatic fun a1() {
+
+        }
+    }
+
+    object A {
+        @JvmStatic fun a2() {
+
+        }
+    }
+
+    fun test() {
+        val s = object {
+            <!JVM_STATIC_NOT_IN_OBJECT!>@JvmStatic fun a3()<!> {
+
+            }
+        }
+    }
+
+    <!JVM_STATIC_NOT_IN_OBJECT!>@JvmStatic fun a4()<!> {
+
+    }
+}
+
+interface B {
+    companion object {
+        <!JVM_STATIC_NOT_IN_OBJECT!>@JvmStatic fun a1()<!> {
+
+        }
+    }
+
+    object A {
+        @JvmStatic fun a2() {
+
+        }
+    }
+
+    fun test() {
+        val s = object {
+            <!JVM_STATIC_NOT_IN_OBJECT!>@JvmStatic fun a3()<!> {
+
+            }
+        }
+    }
+
+    <!JVM_STATIC_NOT_IN_OBJECT!>@JvmStatic fun a4()<!> {
+
+    }
+}