No ENGINE_* APIs are used anymore.

diff --git a/src/tss2-esys/esys_crypto_ossl.c b/src/tss2-esys/esys_crypto_ossl.c
index 1620788..b990f6e 100644
--- a/src/tss2-esys/esys_crypto_ossl.c
+++ b/src/tss2-esys/esys_crypto_ossl.c
@@ -19,7 +19,6 @@
 #include <openssl/params.h>
 #include <openssl/param_build.h>
 #endif
-#include <openssl/engine.h>
 #include <stdio.h>
 
 #include "tss2_esys.h"
diff --git a/test/integration/fapi-data-crypt.int.c b/test/integration/fapi-data-crypt.int.c
index 07437b6..cc0dfd6 100644
--- a/test/integration/fapi-data-crypt.int.c
+++ b/test/integration/fapi-data-crypt.int.c
@@ -15,7 +15,6 @@
 
 #include <openssl/evp.h>
 #include <openssl/rsa.h>
-#include <openssl/engine.h>
 #include <openssl/pem.h>
 
 #include "tss2_fapi.h"
diff --git a/test/integration/fapi-ext-public-key.int.c b/test/integration/fapi-ext-public-key.int.c
index 787a6c9..5d30d2c 100644
--- a/test/integration/fapi-ext-public-key.int.c
+++ b/test/integration/fapi-ext-public-key.int.c
@@ -11,7 +11,6 @@
 #include <openssl/evp.h>
 #include <openssl/aes.h>
 #include <openssl/rsa.h>
-#include <openssl/engine.h>
 #include <openssl/pem.h>
 #include <stdio.h>
 #include <stddef.h>
diff --git a/test/integration/fapi-key-create-policy-signed-keyedhash.int.c b/test/integration/fapi-key-create-policy-signed-keyedhash.int.c
index f9f4131..d65ea10 100644
--- a/test/integration/fapi-key-create-policy-signed-keyedhash.int.c
+++ b/test/integration/fapi-key-create-policy-signed-keyedhash.int.c
@@ -17,7 +17,6 @@
 
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
-#include <openssl/engine.h>
 #include <openssl/pem.h>
 
 #include "tss2_fapi.h"
diff --git a/test/integration/fapi-key-create-policy-signed.int.c b/test/integration/fapi-key-create-policy-signed.int.c
index d20554a..0eb848e 100644
--- a/test/integration/fapi-key-create-policy-signed.int.c
+++ b/test/integration/fapi-key-create-policy-signed.int.c
@@ -17,7 +17,6 @@
 
 #include <openssl/evp.h>
 #include <openssl/rsa.h>
-#include <openssl/engine.h>
 #include <openssl/pem.h>
 
 #include "tss2_fapi.h"