Revert "Stub std::atomic implementation (#3909)" (#3934)

Author: LeStarch

Os/Stub/CMakeLists.txt

@@ -23,19 +23,6 @@ register_fprime_implementation(
   INTERFACE
 )
 
-register_fprime_implementation(
-    StubStandardAtomic
-  IMPLEMENTS
-    StandardAtomic
-  INTERFACE
-)
-target_include_directories(
-  StubStandardAtomic
-  BEFORE INTERFACE SYSTEM
-    "${CMAKE_CURRENT_LIST_DIR}/atomic"
-)
-
-
 # Remainder of file is specific to UTs
 if (NOT BUILD_TESTING)
     return()

Os/Stub/atomic/atomic.hpp

@@ -173,14 +173,4 @@ register_fprime_ut(
     Fw_Types
     Fw_Time
     STest
-)
-
-#### Atomic Stub Testing ####
-register_fprime_ut(
-    StubAtomicTest
-  SOURCES
-    "${CMAKE_CURRENT_LIST_DIR}/ut/StubStdAtomicTests.cpp"
-  DEPENDS
-    Fw_Types
-    STest
 )