Build: Update the Musca-B1 path

The Musca-B1 platform port was moved from "arm/musca_b1/sse_200" to
"arm/musca_b1".
Remains of deprecated ports also removed, as:
- "arm/mps2/an539"
- "arm/mps2/sse-200_aws"
- "arm/musca_b1/secure_enclave"

Signed-off-by: Mark Horvath <mark.horvath@arm.com>
Change-Id: Ie674ef5c0cea9c7dfb104ccee3f6c3c8e0bcf50e
diff --git a/build_helper/build_helper_config_maps.py b/build_helper/build_helper_config_maps.py
index c421291..69427aa 100644
--- a/build_helper/build_helper_config_maps.py
+++ b/build_helper/build_helper_config_maps.py
@@ -17,12 +17,9 @@
     "arm/mps2/an519"                     : "AN519",
     "arm/mps2/an521"                     : "AN521",
     "arm/mps3/an524"                     : "AN524",
-    "arm/mps2/an539"                     : "AN539",
     "arm/mps3/an547"                     : "AN547",
     "arm/mps3/an552"                     : "AN552",
-    "arm/mps2/sse-200_aws"               : "SSE-200_AWS",
-    "arm/musca_b1/sse_200"               : "MUSCA_B1",
-    "arm/musca_b1/secure_enclave"        : "MUSCA_B1_SE",
+    "arm/musca_b1"                       : "MUSCA_B1",
     "arm/musca_s1"                       : "MUSCA_S1",
     "arm/corstone1000"                   : "corstone1000",
     "arm/mps3/corstone310_fvp"           : "corstone310",