Platform: Remove eRPC UART config

The ePRC UART config has been moved the test repo.
Also updates the test repo version to the corresponding commit.

Change-Id: I92d557deb1b7762cb567a5e8d7013c23ddd4f8dc
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/lib/ext/tf-m-tests/repo_config_default.cmake b/lib/ext/tf-m-tests/repo_config_default.cmake
index 4abfc5c..bf4eb54 100644
--- a/lib/ext/tf-m-tests/repo_config_default.cmake
+++ b/lib/ext/tf-m-tests/repo_config_default.cmake
@@ -10,5 +10,5 @@
 # Default configs of tf-m-tests repo
 
 set(TFM_TEST_REPO_PATH                  "DOWNLOAD"  CACHE PATH      "Path to TFM-TEST repo (or DOWNLOAD to fetch automatically")
-set(TFM_TEST_REPO_VERSION               "ef16108"   CACHE STRING    "The version of tf-m-tests to use")
+set(TFM_TEST_REPO_VERSION               "0eca5ea"   CACHE STRING    "The version of tf-m-tests to use")
 set(CMSIS_5_PATH                        "DOWNLOAD"  CACHE PATH      "Path to CMSIS_5 (or DOWNLOAD to fetch automatically")
diff --git a/platform/ext/target/arm/mps2/an521/target_cfg.h b/platform/ext/target/arm/mps2/an521/target_cfg.h
index a5b6edc..f9b3e0f 100644
--- a/platform/ext/target/arm/mps2/an521/target_cfg.h
+++ b/platform/ext/target/arm/mps2/an521/target_cfg.h
@@ -25,7 +25,6 @@
 
 #define TFM_DRIVER_STDIO    Driver_USART0
 #define NS_DRIVER_STDIO     Driver_USART0
-#define ERPC_UART           Driver_USART1
 
 /**
  * \brief Defines the word offsets of Slave Peripheral Protection Controller
diff --git a/platform/ext/target/arm/musca_s1/target_cfg.h b/platform/ext/target/arm/musca_s1/target_cfg.h
index f1990cd..6c95b19 100644
--- a/platform/ext/target/arm/musca_s1/target_cfg.h
+++ b/platform/ext/target/arm/musca_s1/target_cfg.h
@@ -27,7 +27,6 @@
 
 #define TFM_DRIVER_STDIO    Driver_USART1
 #define NS_DRIVER_STDIO     Driver_USART1
-#define ERPC_UART           Driver_USART1
 
 /**
  * \brief Defines the word offsets of Slave Peripheral Protection Controller