package/ci: CMAKE_BUILD_TYPE has no use for Xcode generator.

package/ci/travis-ios-simulator.sh

@@ -27,7 +27,6 @@ cmake .. \
     -DCMAKE_OSX_ARCHITECTURES="x86_64" \
     -DCORRADE_RC_EXECUTABLE=$HOME/deps-native/bin/corrade-rc \
     -DCMAKE_INSTALL_PREFIX=$HOME/deps \
-    -DCMAKE_BUILD_TYPE=Release \
     -DBUILD_STATIC=ON \
     -DTESTSUITE_TARGET_XCTEST=ON \
     -DWITH_INTERCONNECT=OFF \
@@ -43,7 +42,6 @@ cmake .. \
     -DCMAKE_OSX_ARCHITECTURES="x86_64" \
     -DCORRADE_RC_EXECUTABLE=$HOME/deps-native/bin/corrade-rc \
     -DCMAKE_PREFIX_PATH="$HOME/deps;$TRAVIS_BUILD_DIR/sdl2" \
-    -DCMAKE_BUILD_TYPE=Release \
     -DTARGET_GLES2=$TARGET_GLES2 \
     -DWITH_AUDIO=ON \
     -DWITH_SDL2APPLICATION=ON \