GenericBuildConfiguration: Use user modified environment

Task-Nr: QTCREATORBUG-3211

src/plugins/genericprojectmanager/genericbuildconfiguration.cpp

@@ -85,11 +85,6 @@ bool GenericBuildConfiguration::fromMap(const QVariantMap &map)
     return BuildConfiguration::fromMap(map);
 }
 
-Utils::Environment GenericBuildConfiguration::environment() const
-{
-    return Utils::Environment::systemEnvironment();
-}
-
 QString GenericBuildConfiguration::buildDirectory() const
 {
     // Convert to absolute path when necessary

src/plugins/genericprojectmanager/genericbuildconfiguration.h

@@ -49,7 +49,6 @@ public:
 
     GenericTarget *genericTarget() const;
 
-    virtual Utils::Environment environment() const;
     virtual QString buildDirectory() const;
 
     QString rawBuildDirectory() const;