build-win: mingw-x86: windeploy_helper.sh not needed anymore

README.md

@@ -165,7 +165,7 @@ TODO
    Where ```%MSYS_ROOT%``` will be ```c:\msys32``` if your host OS is x86-based or ```c:\msys64``` if your host OS
    is x64-based
 
-6. Clone git repository:
+6. Clone repository:
     ```
     git clone https://github.com/monero-project/monero-core.git
     ```

monero-core.pro

@@ -221,7 +221,6 @@ macx {
 
 win32 {
     deploy.commands += windeployqt $$sprintf("%1/%2/%3.exe", $$OUT_PWD, $$DESTDIR, $$TARGET) -release -qmldir=$$PWD
-    deploy.commands += $$escape_expand(\n\t) $$PWD/windeploy_helper.sh $$DESTDIR
 }