Remove unused layers browser and QT5

.gitmodules

@@ -14,18 +14,10 @@
 	path = sources/meta-openamp
 	url = https://github.com/Xilinx/meta-openamp
 	branch = xilinx-v2020.3
-[submodule "meta-browser"]
-	path = sources/meta-browser
-	url = https://github.com/Xilinx/meta-browser
-	branch = xilinx-v2020.3
 [submodule "meta-clang"]
 	path = sources/meta-clang
 	url = https://github.com/Xilinx/meta-clang
 	branch = xilinx-v2020.3
-[submodule "meta-qt5"]
-	path = sources/meta-qt5
-	url = https://github.com/Xilinx/meta-qt5
-	branch = rel-v2020.2
 [submodule "meta-techlab-utils"]
 	path = sources/meta-techlab-utils
 	url = https://github.com/MicroTCA-Tech-Lab/meta-techlab-utils

meta-browser @ ad13d59c

-Subproject commit ad13d59c9db4b6979f8c05c200a97475eb94d692

meta-qt5 @ 432ad2aa

-Subproject commit 432ad2aa6c3a13253fefc909faba368851d21fb1