revert: build: Add compile check for std::format (originally acts-project#4415) (acts-project#4418)

This reverts commit 52f80a4.
This is causing issues in the Athena build. i'll come back to this next
week.

Author: paulgessinger

cmake/ActsCompilerOptions.cmake

@@ -67,24 +67,3 @@ set(CMAKE_MACOSX_RPATH 1)
 set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 # set relative library path for ACTS libraries
 set(CMAKE_INSTALL_RPATH "\$ORIGIN/../${CMAKE_INSTALL_LIBDIR}")
-
-# Check compiler features that we require.
-# This is an alternative to requiring compiler version checks and is more generic
-check_cxx_source_compiles(
-    "
-#include <format>
-#include <string>
-
-int main() {
-std::string s = std::format(\"Hello, {}!\", \"World\");
-}
-"
-    HAVE_STDFORMAT
-)
-
-if(NOT HAVE_STDFORMAT)
-    message(
-        SEND_ERROR
-        "C++20 std::format support is required, but not available in this compiler"
-    )
-endif()