Revert "Intel: Enable threshold event monitoring"

This reverts commit e2bf47543d715c14dda49ddeec2c21c884dc63aa.

This recipe does not exist yet so it is causing a build error
having this .bbappend.

Change-Id: Iacc0a35a7aafc01d6995926ed04d9a8d83e7f838
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/meta-common/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend b/meta-common/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend
deleted file mode 100644
index 4be8ddb..0000000
--- a/meta-common/recipes-phosphor/sel-logger/phosphor-sel-logger_%.bbappend
+++ /dev/null
@@ -1,2 +0,0 @@
-# Enable threshold monitoring
-EXTRA_OECMAKE += "-DSEL_LOGGER_MONITOR_THRESHOLD_EVENTS=ON"