Drop the minimal variant of the default port implementation (#4331)

The minimal variant became quite meaningless lately. There were two
port APIs originally that had extra functions in the default port
in addition to the core-mandated implementations: the I/O and
Termination port APIs. However, the extra Termination API code was
removed a year ago, leaving some minimal extension in the I/O port
only. As the overhead of the extension is negligible, it is not
worth maintaining two library variants.

Therefore
- this commit removes the minimal variant of the default port lib,
- rewrites uses of the minimal variant to use the variant with the
  I/O extension, and
- updates targets where I/O port code was copy-n-pasted.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

jerry-main/CMakeLists.txt

@@ -70,7 +70,7 @@ endif()
 
 if(JERRY_CMDLINE_TEST)
   jerry_create_executable("jerry-test" "main-unix-test.c" "benchmarking.c")
-  target_link_libraries("jerry-test" jerry-port-default-minimal)
+  target_link_libraries("jerry-test" jerry-port-default)
   if (JERRY_TEST_STACK_MEASURE)
     target_compile_definitions("jerry-test" PRIVATE -DJERRY_TEST_STACK_MEASURE=1)
   endif()