Ignore incosistent results of pdf-mac and pdf-poppler renderers, and remove a temp file checked in …

expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Debug/expected-results.json

Index: expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Debug/expected-results.json
===================================================================
--- expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Debug/expected-results.json	(revision 11468)
+++ expectations/gm/Test-Mac10.6-MacMini4.1-GeForce320M-x86-Debug/expected-results.json	(working copy)
@@ -12259,7 +12259,8 @@
       "bugs": [
         1603
       ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": false,
+      "ignore-failure": true
     }, 
     "scaled_tilemode_gradient_pdf-poppler.png": {
       "allowed-digests": [
@@ -14155,7 +14156,8 @@
       "bugs": [
         1578
       ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": false,
+      "ignore-failure": true
     }, 
     "tilemode_gradient_pdf-poppler.png": {
       "allowed-digests": [
@@ -14907,4 +14909,4 @@
       "reviewed-by-human": false
     }
   }
-}
+}