revert all changes regarding --exclude-libs,libcrypto.a

I don't have time right now to investigate the impact of this change

CMakeLists.txt

@@ -152,20 +152,6 @@ target_include_directories(${PROJECT_NAME} PUBLIC
 
 aws_prepare_shared_lib_exports(${PROJECT_NAME})
 
-if (UNIX AND NOT APPLE)
-    # Hide symbols from libcrypto.a
-    # This avoids problems when an application ends up using both libcrypto.a and libcrypto.so.
-    #
-    # An example of this happening is the aws-c-io tests.
-    # All the C libs are compiled statically, but then a PKCS#11 library is
-    # loaded at runtime which happens to use libcrypto.so from OpenSSL.
-    # If the symbols from libcrypto.a aren't hidden, then SOME function calls use the libcrypto.a implementation
-    # and SOME function calls use the libcrypto.so implementation, and this mismatch leads to weird crashes.
-    #
-    # Make this option PUBLIC so it's applied to every downstream shared lib or application.
-    target_link_options(${PROJECT_NAME} PUBLIC "LINKER:--exclude-libs,libcrypto.a")
-endif()
-
 configure_file("cmake/${PROJECT_NAME}-config.cmake"
   "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
   @ONLY)