Remove no longer used contrib/bitcoin-qt.pro from the repo

contrib/bitcoin-qt.pro

@@ -1,22 +0,0 @@
-FORMS += \
-    ../src/qt/forms/aboutdialog.ui \
-    ../src/qt/forms/addressbookpage.ui \
-    ../src/qt/forms/askpassphrasedialog.ui \
-    ../src/qt/forms/coincontroldialog.ui \
-    ../src/qt/forms/editaddressdialog.ui \
-    ../src/qt/forms/helpmessagedialog.ui \
-    ../src/qt/forms/intro.ui \
-    ../src/qt/forms/openuridialog.ui \
-    ../src/qt/forms/optionsdialog.ui \
-    ../src/qt/forms/overviewpage.ui \
-    ../src/qt/forms/receivecoinsdialog.ui \
-    ../src/qt/forms/receiverequestdialog.ui \
-    ../src/qt/forms/debugwindow.ui \
-    ../src/qt/forms/sendcoinsdialog.ui \
-    ../src/qt/forms/sendcoinsentry.ui \
-    ../src/qt/forms/signverifymessagedialog.ui \
-    ../src/qt/forms/transactiondescdialog.ui \
-    ../src/qt/forms/createwalletdialog.ui
-
-RESOURCES += \
-    ../src/qt/bitcoin.qrc

doc/translation_process.md

@@ -22,8 +22,6 @@ cd src/
 make translate
 ```
 
-`contrib/bitcoin-qt.pro` takes care of generating `.qm` (binary compiled) files from `.ts` (source files) files. It’s mostly automated, and you shouldn’t need to worry about it.
-
 **Example Qt translation**
 ```cpp
 QToolBar *toolbar = addToolBar(tr("Tabs toolbar"));