update Travis-CI test

Author: MartinNowak

travis.sh

@@ -4,13 +4,13 @@ set -exo pipefail
 
 N=2
 
-make -j$N -C src -f posix.mak ddmd HOST_DMD=$DMD
+make -j$N -C src -f posix.mak HOST_DMD=$DMD
 make -j$N -C src -f posix.mak dmd.conf
 git clone --depth=1 https://github.com/D-Programming-Language/druntime.git ../druntime
 git clone --depth=1 https://github.com/D-Programming-Language/phobos.git ../phobos
-make -j$N -C ../druntime -f posix.mak DMD=../dmd/src/ddmd
-make -j$N -C ../phobos -f posix.mak DMD=../dmd/src/ddmd
+make -j$N -C ../druntime -f posix.mak
+make -j$N -C ../phobos -f posix.mak
 
-make -j$N -C ../druntime -f posix.mak DMD=../dmd/src/ddmd unittest
-make -j$N -C ../phobos -f posix.mak DMD=../dmd/src/ddmd unittest
-make -j$N -C test DMD=../src/ddmd MODEL=64
+make -j$N -C ../druntime -f posix.mak unittest
+make -j$N -C ../phobos -f posix.mak unittest
+make -j$N -C test MODEL=64