Do not keep interop C stubs file by default

Interop/Indexer/build.gradle

@@ -79,6 +79,7 @@ kotlinNativeInterop {
         defFile 'clang.def'
         compilerOpts "-I$llvmDir/include"
         linkerOpts "-L$llvmDir/lib"
+        genTask.args '-keepcstubs:true'
     }
 }
 

Interop/StubGenerator/src/main/kotlin/org/jetbrains/kotlin/native/interop/gen/jvm/main.kt

@@ -391,4 +391,8 @@ private fun processLib(konanHome: String,
 
         runCmd(compilerCmd, workDir, verbose)
     }
+
+    if (!args["-keepcstubs"].isTrue()) {
+        outCFile.delete()
+    }
 }