[test] Remove -enable-source-import from two very old JIT tests

Ah, the pre-Swift-1 days... -enable-source-import may come back in
some form some day, but it's not supported now.

Author: jrose-apple

test/Interpreter/fractal.swift

@@ -1,11 +1,12 @@
 // RUN: %empty-directory(%t)
-// RUN: %target-jit-run %s -I %S -enable-source-import | %FileCheck %s
-// REQUIRES: executable_test
+// RUN: %target-build-swift -emit-library -o %t/libcomplex.%target-dylib-extension -emit-module %S/complex.swift -module-link-name complex
+// RUN: %target-jit-run %s -I %t -L %t | %FileCheck %s
 
-// REQUIRES: swift_interpreter
+// RUN: grep -v import %s > %t/main.swift
+// RUN: %target-jit-run %t/main.swift %S/complex.swift | %FileCheck %s
 
-// FIXME: iOS: -enable-source-import plus %target-build-swift equals link errors
-// FIXME: This test uses IRGen with -enable-source-import; it may fail with -g.
+// REQUIRES: executable_test
+// REQUIRES: swift_interpreter
 
 import complex
 

test/Interpreter/mandelbrot.swift

@@ -1,10 +1,13 @@
-// RUN: %target-jit-run -I %S -enable-source-import %s | %FileCheck %s
+// RUN: %empty-directory(%t)
+// RUN: %target-build-swift -emit-library -o %t/libcomplex.%target-dylib-extension -emit-module %S/complex.swift -module-link-name complex
+// RUN: %target-jit-run %s -I %t -L %t | %FileCheck %s
+
+// RUN: grep -v import %s > %t/main.swift
+// RUN: %target-jit-run %t/main.swift %S/complex.swift | %FileCheck %s
+
 // REQUIRES: executable_test
 // REQUIRES: swift_interpreter
 
-// FIXME: iOS: -enable-source-import plus %target-build-swift equals link errors
-// FIXME: This test uses IRGen with -enable-source-import; it may fail with -g.
-
 import complex
 
 func printDensity(_ d: Int) {