Remove ConfigCoreTest

-Removed configuration from build step.
-Removed configuration from LAVA test step.
-Updated build script.

Change-Id: I1d6bae1024683c48c07482ba1cdbba7b5e261e72
Signed-off-by: Edison Ai <edison.ai@arm.com>
diff --git a/tfm_ci_pylib/tfm_builder.py b/tfm_ci_pylib/tfm_builder.py
index d34736f..37a1315 100644
--- a/tfm_ci_pylib/tfm_builder.py
+++ b/tfm_ci_pylib/tfm_builder.py
@@ -160,11 +160,7 @@
 
         else:
             binaries += [os.path.join(self._tfb_build_dir, "app", "tfm_ns")]
-            if "ConfigCoreTest" in self._tfb_build_dir:
-                binaries += [os.path.join(self._tfb_build_dir,
-                                          "unit_test", "tfm_s")]
-            else:
-                binaries += [os.path.join(self._tfb_build_dir, "app",
+            binaries += [os.path.join(self._tfb_build_dir, "app",
                                           "secure_fw", "tfm_s")]
             if self._tfb_cfg["WITH_MCUBOOT"]:
                 binaries += [os.path.join(self._tfb_build_dir,