Remove 'hal_neuralnetworks_armnn' permissive rule

Not needed after fixing the various violations that were raised in the
past.

Bug: b/264489188
Test: manual - reboot device and check the absence of AVC denials
Change-Id: I9a5b5f916e3e188ea98646b23a43e5dec0cd8501
diff --git a/tracking_denials/hal_neuralnetworks_armnn.te b/tracking_denials/hal_neuralnetworks_armnn.te
deleted file mode 100644
index 52fee0c..0000000
--- a/tracking_denials/hal_neuralnetworks_armnn.te
+++ /dev/null
@@ -1,4 +0,0 @@
-# b/264489188
-userdebug_or_eng(`
-  permissive hal_neuralnetworks_armnn;
-')
\ No newline at end of file