REGTESTS: remove the expected window updates from H2 handshakes

These ones are not needed anymore since commit 97aaa67 ("MINOR: mux-h2:
only increase the connection window with the first update"). The tests
should now be more reliable. It might be worth simply removing all the
explicit handshake though it doesn't hurt and still serves as documentation.
diff --git a/reg-tests/http-messaging/h00002.vtc b/reg-tests/http-messaging/h00002.vtc
index 27d2540..d2d0b9d 100644
--- a/reg-tests/http-messaging/h00002.vtc
+++ b/reg-tests/http-messaging/h00002.vtc
@@ -58,7 +58,6 @@
 		txsettings
 		rxsettings
 		txsettings -ack
-		rxwinup
 		rxsettings
 		expect settings.ack == true
 	} -run
@@ -132,7 +131,6 @@
 #		txsettings
 #		rxsettings
 #		txsettings -ack
-#		rxwinup
 #		rxsettings
 #		expect settings.ack == true
 #	} -run
@@ -206,7 +204,6 @@
 		txsettings
 		rxsettings
 		txsettings -ack
-		rxwinup
 		rxsettings
 		expect settings.ack == true
 	} -run
diff --git a/reg-tests/http-rules/h00001.vtc b/reg-tests/http-rules/h00001.vtc
index ebe8b57..0ed0984 100644
--- a/reg-tests/http-rules/h00001.vtc
+++ b/reg-tests/http-rules/h00001.vtc
@@ -193,7 +193,6 @@
 		txsettings
 		rxsettings
 		txsettings -ack
-		rxwinup
 		rxsettings
 		expect settings.ack == true
 	} -run