MLECO-3096: Removing data_acq and data_psn

Further to the HAL refactoring done in previous commits,
this CR simpifies HAL by removing data_acq and data_psn
"modules". The associated function pointers have been
removed.

Change-Id: I04c194c08dfe0aff98ce4e0f0f056bac254c137d
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>
diff --git a/source/use_case/ad/src/MainLoop.cc b/source/use_case/ad/src/MainLoop.cc
index 5a289bf..e858320 100644
--- a/source/use_case/ad/src/MainLoop.cc
+++ b/source/use_case/ad/src/MainLoop.cc
@@ -78,7 +78,7 @@
         int menuOption = MENU_OPT_RUN_INF_NEXT;
         if (bUseMenu) {
             DisplayMenu();
-            menuOption = arm::app::ReadUserInputAsInt(platform);
+            menuOption = arm::app::ReadUserInputAsInt();
             printf("\n");
         }
         switch (menuOption) {
@@ -93,7 +93,7 @@
                        NUMBER_OF_FILES-1);
                 fflush(stdout);
                 auto audioIndex = static_cast<uint32_t>(
-                        arm::app::ReadUserInputAsInt(platform));
+                        arm::app::ReadUserInputAsInt());
                 executionSuccessful = ClassifyVibrationHandler(caseContext,
                                                            audioIndex,
                                                            false);