[Commonizer] AbstractCommonizationFromSourcesTest remove assertions on commonized leaf/platform libraries

Those assertions are not necessary anymore, since the commonizer is not
expected to produce any new "actuals" per given expect.
The IDE is supposed to analyze leaf source sets against the original
platform libraries.

native/commonizer/testData/functionCommonization/specifics/commonized/js/package_root.kt

@@ -1,19 +0,0 @@
-actual suspend fun suspendFunction1() = 1
-suspend fun suspendFunction2() = 1
-
-actual class Qux actual constructor()
-
-actual operator fun Qux.get(index: Int) = "$index"
-actual operator fun Qux.set(index: Int, value: String) = Unit
-
-actual infix fun Qux.infixFunction1(another: Qux) {}
-actual infix fun Qux.infixFunction2(another: Qux) {}
-
-actual tailrec fun tailrecFunction1() {}
-actual tailrec fun tailrecFunction2() {}
-
-actual external fun externalFunction1()
-actual external fun externalFunction2()
-
-actual inline fun inlineFunction1() {}
-actual inline fun inlineFunction2() {}

native/commonizer/testData/functionCommonization/specifics/commonized/jvm/package_root.kt

@@ -1,19 +0,0 @@
-actual suspend fun suspendFunction1() = 1
-fun suspendFunction2() = 1
-
-actual class Qux actual constructor()
-
-actual operator fun Qux.get(index: Int) = "$index"
-actual fun Qux.set(index: Int, value: String) = Unit
-
-actual infix fun Qux.infixFunction1(another: Qux) {}
-actual fun Qux.infixFunction2(another: Qux) {}
-
-actual tailrec fun tailrecFunction1() {}
-actual fun tailrecFunction2() {}
-
-actual external fun externalFunction1()
-actual fun externalFunction2() {}
-
-actual inline fun inlineFunction1() {}
-actual fun inlineFunction2() {}