Removed dependency on debug libusb

libusb/appveyor_cygwin.bat

@@ -1,11 +0,0 @@
-echo on
-SetLocal EnableDelayedExpansion
-
-if [%Configuration%] NEQ [Release] exit 0
-if [%Platform%] NEQ [Win32] exit 0
-
-C:\cygwin\bin\bash -e -l -c "./bootstrap.sh" || exit /B
-C:\cygwin\bin\bash -e -l -c "mkdir build-Win32-cygwin" || exit /B
-C:\cygwin\bin\bash -e -l -c "cd build-Win32-cygwin && ../configure --enable-examples-build --enable-tests-build" || exit /B
-C:\cygwin\bin\bash -e -l -c "cd build-Win32-cygwin && make -j4" || exit /B
-C:\cygwin\bin\bash -e -l -c "cd build-Win32-cygwin && make install" || exit /B