Switch JetMultifileBasicCompletionTest to generated approach

idea/testData/completion/basic/multifile/ExtensionFunctionOnImportedFunction-2.kt

@@ -1,9 +0,0 @@
-package second
-
-class Some
-
-// Two function to prevent automatic insert
-fun Some.extensionFunction1() = 12
-fun Some.extensionFunction2() = 12
-
-fun foo() = Some()

idea/testData/completion/basic/multifile/ExtensionFunctionOnImportedFunction.dependency.kt

@@ -0,0 +1,9 @@
+package second
+
+class Some
+
+// Two function to prevent automatic insert
+fun Some.extensionFunction1(): Int = 12
+fun Some.extensionFunction2(): Int = 12
+
+fun foo(): Some = Some()

idea/testData/completion/basic/multifile/ExtensionFunctionOnUnresolved-1.kt

@@ -1,11 +0,0 @@
-package first
-
-fun firstFun() {
-    val a = SomeUnknownClass()
-    a.hello<caret>
-}
-
-// ABSENT: helloFun
-// ABSENT: helloFunPreventAutoInsert
-// ABSENT: helloWithParams
-// NUMBER: 0

idea/testData/completion/basic/multifile/ExtensionFunctionOnUnresolved-2.kt

@@ -1,11 +0,0 @@
-package second
-
-fun String.helloFun() {
-}
-
-fun String.helloWithParams(i : Int) : String {
-    return ""
-}
-
-fun String.helloFunPreventAutoInsert() {
-}

idea/testData/completion/basic/multifile/ExtensionProperty-1.kt

@@ -1,12 +0,0 @@
-package first
-
-import second.SomeTestClass
-
-fun firstFun() {
-    SomeTestClass().some<caret>
-}
-
-// EXIST: someProperty
-// EXIST: someOtherProperty
-// EXIST: someSelfProperty
-// NUMBER: 3

idea/testData/completion/basic/multifile/ExtensionProperty-2.kt

@@ -1,8 +0,0 @@
-package second
-
-class SomeTestClass() {
-}
-
-val SomeTestClass.someProperty = 12
-var SomeTestClass.someOtherProperty = ""
-val SomeTestClass.someSelfProperty = SomeTestClass()

idea/testData/completion/basic/multifile/InImportedFunctionLiteralParameter.dependency.kt

@@ -6,4 +6,4 @@ class Some {
   fun testFunction2() : Int = 12
 }
 
-fun someWithLiteral(body: (Some) -> Unit) = 12
+fun someWithLiteral(body: (Some) -> Unit): Int = 12