remove mac and win32 from 1.9a2-4 due to bug 408443 b=408610 r=rhelmer p=joduinn

tools/patcher-configs/moz19-branch-patcher2.cfg

@@ -41,9 +41,7 @@
             <3.0a2>
                 schema   1
                 <platforms>
-                    win32 2007020617
                     linux-i686 2007020616
-                    mac 2007020618
                 </platforms>
                 version 3.0a2
                 extension-version 3.0a2
@@ -53,9 +51,7 @@
             <3.0a3>
                 schema   1
                 <platforms>
-                    win32 2007032219
                     linux-i686 2007032219
-                    mac 2007032220
                 </platforms>
                 version 3.0a3
                 extension-version 3.0a3
@@ -65,9 +61,7 @@
             <3.0a4>
                 schema   1
                 <platforms>
-                    win32 2007042705
                     linux-i686 2007042705
-                    mac 2007042705
                 </platforms>
                 version 3.0a4
                 extension-version 3.0a4