Do not remote duplicate entries from ldflags when generating ninja files as it changes behavior

test/ninja/duplicate-ldflags/test.gyp

Index: test/ninja/duplicate-ldflags/test.gyp
diff --git a/test/analyzer/test5.gyp b/test/ninja/duplicate-ldflags/test.gyp
similarity index 55%
copy from test/analyzer/test5.gyp
copy to test/ninja/duplicate-ldflags/test.gyp
index f3ea5b00612d086d83f6607cfb357749b3c586dd..43ad739e77d74addb5a90861ed2838e62c5f75b7 100644
--- a/test/analyzer/test5.gyp
+++ b/test/ninja/duplicate-ldflags/test.gyp
@@ -5,20 +5,17 @@
 {
   'targets': [
     {
-      'target_name': 'f',
+      'target_name': 'All',
       'type': 'executable',
-      'sources': [
-        'f.c',
+      'ldflags': [
+        '-Wl,--whole-archive lib1.a',
+        '-Wl,--no-whole-archive',
+
+        '-Wl,--whole-archive lib2.a',
+        '-Wl,--no-whole-archive',
       ],
-    },
-    {
-      'target_name': 'g',
-      'type': 'executable',
       'sources': [
-        'g.c',
-      ],
-      'dependencies': [
-        'f',
+        'main.cc',
       ],
     },
   ],