tests: Remove use of ignoreMessage
tests: Remove use of ignoreMessage

- QTest::ignoreMessage(QRegularExpression) as only added in Qt 5.3
  removing for now.

0x90sled/neovim-qt,ravloony/neovim-qt,equalsraf/neovim-qt,Pireax/neovim-qt,ravloony/neovim-qt,Pireax/neovim-qt,ngkaho1234/neovim-qt,equalsraf/neovim-qt,ngkaho1234/neovim-qt,0x90sled/neovim-qt,equalsraf/neovim-qt,0x90sled/neovim-qt,Pireax/neovim-qt,ngkaho1234/neovim-qt,equalsraf/neovim-qt,ravloony/neovim-qt