Revert "Merge pull request #3011 from Patater/dev/jp-bennett/development-2.7"

This reverts commit 130e1364393f92df5bd1377b9eeab4c388cf509b, reversing
changes made to 071b3e170e6a10ca523f9ed561394584d7a982f4.

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

Fixes #3005.
diff --git a/ChangeLog b/ChangeLog
index 0dac497..4fe9c94 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,8 +10,6 @@
      ARMmbed/mbed-crypto#352
 
 Bugfix
-   * Allow loading symlinked certificates. Fixes #3005. Reported and fixed
-     by Jonathan Bennett <JBennett@incomsystems.biz> via #3008.
    * Fix an unchecked call to mbedtls_md() in the x509write module.
 
 = mbed TLS 2.7.13 branch released 2020-01-15
diff --git a/library/x509_crt.c b/library/x509_crt.c
index 55c7ea1..3ad53a7 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1207,7 +1207,7 @@
             goto cleanup;
         }
 
-        if( !( S_ISREG( sb.st_mode ) || S_ISLNK( sb.st_mode ) ) )
+        if( !S_ISREG( sb.st_mode ) )
             continue;
 
         // Ignore parse errors