hwc: remove SKIP_LAYER check when reserving windows

Fixes a case where the HWC does not skip a window to hold the
framebuffer, causing one of the other overlays to vanish.

Change-Id: I8f48547b145162a523a624d59b4d166cea2e0df7
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/libhwc/hwc.cpp b/libhwc/hwc.cpp
index 289d7a5..24a3bec 100644
--- a/libhwc/hwc.cpp
+++ b/libhwc/hwc.cpp
@@ -647,8 +647,6 @@
 
     for (size_t i = 0; i < displays[0]->numHwLayers; i++) {
         hwc_layer_1_t &layer = displays[0]->hwLayers[i];
-        if (layer.flags & HWC_SKIP_LAYER)
-            continue;
 
         if (fb_needed && i == first_fb) {
             ALOGV("assigning framebuffer to window %u\n",