Remove MOCKABLE_VIRTUAL from getLibFunc()

- this method is called in ctor

Change-Id: I8d16ab30c7bf8f886db8369024c1445eeda061ad
Signed-off-by: Mateusz Hoppe <mateusz.hoppe@intel.com>

Author: HoppeMateusz

runtime/sharings/va/va_sharing_functions.h

@@ -42,7 +42,7 @@ class VASharingFunctions : public SharingFunctions {
         return vaSyncSurfacePFN(vaDisplay, vaSurface);
     }
 
-    MOCKABLE_VIRTUAL void *getLibFunc(const char *func) {
+    void *getLibFunc(const char *func) {
         if (vaGetLibFuncPFN) {
             return vaGetLibFuncPFN(vaDisplay, func);
         }

unit_tests/sharings/va/mock_va_sharing.h

@@ -23,7 +23,6 @@ class VASharingFunctionsMock : public VASharingFunctions {
     bool deriveImageCalled = false;
     bool destroyImageCalled = false;
     bool syncSurfaceCalled = false;
-    bool getLibFuncCalled = false;
     bool extGetSurfaceHandleCalled = false;
 
     osHandle acquiredVaHandle = 0;
@@ -69,11 +68,6 @@ class VASharingFunctionsMock : public VASharingFunctions {
         syncSurfaceCalled = true;
         return VA_STATUS_SUCCESS;
     }
-
-    void *getLibFunc(const char *func) override {
-        getLibFuncCalled = true;
-        return nullptr;
-    }
 };
 
 class MockVaSharing {