Revert "Merge pull request #3012 from Patater/dev/jp-bennett/development-2.16"

This reverts commit 7550e857bf, reversing
changes made to d0c2575324.

stat() will never return S_IFLNK as the file type, as stat()
explicitly follows symlinks.

Fixes #3005.

ChangeLog

@@ -63,6 +63,8 @@ Changes
    * Reduce RAM consumption during session renegotiation by not storing
      the peer CRT chain and session ticket twice.
 
+= mbed TLS 2.16.X branch released XXXX-XX-XX
+
 Security
    * Fix potential memory overread when performing an ECDSA signature
      operation. The overread only happens with cryptographically low
@@ -77,8 +79,6 @@ Security
      ARMmbed/mbed-crypto#352
 
 Bugfix
-   * Allow loading symlinked certificates. Fixes #3005. Reported and fixed
-     by Jonathan Bennett <[email protected]> via #3008.
    * Fix an unchecked call to mbedtls_md() in the x509write module.
 
 = mbed TLS 2.16.4 branch released 2020-01-15

library/x509_crt.c

@@ -2023,7 +2023,7 @@ cleanup:
             goto cleanup;
         }
 
-        if( !( S_ISREG( sb.st_mode ) || S_ISLNK( sb.st_mode ) ) )
+        if( !S_ISREG( sb.st_mode ) )
             continue;
 
         // Ignore parse errors