disable PixelWipe test until we can keep it from OOMing ctest

src/tests/pixel.cpp

@@ -146,6 +146,8 @@ TEST_CASE("Pixel") {
     CHECK(0 == notcurses_render(nc_));
   }
 
+  // too much output -- OOMs ctest FIXME
+  /*
 #ifdef NOTCURSES_USE_MULTIMEDIA
   SUBCASE("PixelWipeImage") {
     uint64_t channels = 0;
@@ -173,6 +175,7 @@ TEST_CASE("Pixel") {
     ncvisual_destroy(ncv);
   }
 #endif
+*/
 
   CHECK(!notcurses_stop(nc_));
 }