Bump required Qt version

... and remove the workarounds that are no longer needed.

Change-Id: Ie0ae19279633784f8cea3bdbe4a9eeaa308689aa
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>

1 files changed, 2 insertions, 2 deletions

diff --git a/qbs.pro b/qbs.pro
index c3fa48fac..eeafc9823 100644
--- a/qbs.pro
+++ b/qbs.pro
@@ -23,9 +23,9 @@ defineTest(minQtVersion) {
     return(false)
 }
 
-!minQtVersion(5, 6, 0) {
+!minQtVersion(5, 9, 0) {
     message("Cannot build qbs with Qt version $${QT_VERSION}.")
-    error("Use at least Qt 5.6.0.")
+    error("Use at least Qt 5.9.0.")
 }
 
 TEMPLATE = subdirs