Remove old simulator support from liblog

As far as I know, this isn't used anymore, and is causing problems when
building with bionic on the host (with the cast of open).

Bug: 31559095
Test: host bionic compiles
Change-Id: I8b6e802e2d6dcc6e8476e387a5a365903aec3be1
diff --git a/liblog/fake_writer.c b/liblog/fake_writer.c
index 969661a..403dc72 100644
--- a/liblog/fake_writer.c
+++ b/liblog/fake_writer.c
@@ -55,9 +55,9 @@
       continue;
     }
     snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(i));
-    logFds[i] = fakeLogOpen(buf, O_WRONLY);
+    logFds[i] = fakeLogOpen(buf);
     if (logFds[i] < 0) {
-      fprintf(stderr, "fakeLogOpen(%s, O_WRONLY) failed\n", buf);
+      fprintf(stderr, "fakeLogOpen(%s) failed\n", buf);
     }
   }
   return 0;