Make BlackBox tests for Java 9 generated

compiler/testData/codegen/java9/box/concatDynamic.kt

@@ -7,8 +7,4 @@ fun box(): String {
     val s =  a + "1" + "2" + 3 + 4L + b + 5.0 + 6F + '7' + true + false + 3147483647u + p
 
     return if (s != "_1234_5.06.07truefalse31474836473147483648") "fail $s" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}

compiler/testData/codegen/java9/box/concatDynamic200.kt

@@ -15,8 +15,4 @@ fun box(): String {
 
     return if (result.length != 200)
         "fail: ${result.length}" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}

compiler/testData/codegen/java9/box/concatDynamic201.kt

@@ -16,8 +16,4 @@ fun box(): String {
 
     return if (result.length != 201)
         "fail: ${result.length}" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}

compiler/testData/codegen/java9/box/concatDynamicIndy200.kt

@@ -15,8 +15,4 @@ fun box(): String {
 
     return if (result.length != 200)
         "fail: ${result.length}" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}

compiler/testData/codegen/java9/box/concatDynamicIndy201.kt

@@ -16,8 +16,4 @@ fun box(): String {
 
     return if (result.length != 201)
         "fail: ${result.length}" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}

compiler/testData/codegen/java9/box/concatDynamicInlineClasses.kt

@@ -24,8 +24,4 @@ fun box(): String {
     if (test5 != "2nullnull") return "fail 5: $test5"
 
     return "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
 }

compiler/testData/codegen/java9/box/concatDynamicWithInline.kt

@@ -18,8 +18,4 @@ fun box(): String {
 
     val result2 = test { it + "_" }
     return if (result2 != "12_3456_789_10")  "fail 2: $result2" else "OK"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
 }

compiler/testData/codegen/java9/box/varHandle.kt

@@ -31,8 +31,4 @@ fun box(): String {
     }
 
     return if (handle.getVolatile(array, index) == newValue) "OK" else "Fail"
-}
-
-fun main() {
-    box().let { if (it != "OK") throw AssertionError(it) }
-}
+}