fix(plat): remove fvp_r

The platform has not been maintained for some years and is generally
broken. Remove it to avoid confusion.

Change-Id: I93d832d51e114689ec79969af5d96071a03f4a88
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
diff --git a/docs/threat_model/firmware_threat_model/index.rst b/docs/threat_model/firmware_threat_model/index.rst
index ce1752f..89205de 100644
--- a/docs/threat_model/firmware_threat_model/index.rst
+++ b/docs/threat_model/firmware_threat_model/index.rst
@@ -29,13 +29,12 @@
 
    threat_model
    threat_model_el3_spm
-   threat_model_fvp_r
    threat_model_rse_interface
    threat_model_arm_cca
    threat_model_fw_update_and_recovery
 
 --------------
 
-*Copyright (c) 2021-2024, Arm Limited and Contributors. All rights reserved.*
+*Copyright (c) 2021-2025, Arm Limited and Contributors. All rights reserved.*
 
 .. _STRIDE threat modeling technique: https://docs.microsoft.com/en-us/azure/security/develop/threat-modeling-tool-threats#stride-model