remove gcc-10 for ubuntu 20.04 for testing

Author: Bill-hbrhbr

tools/scripts/lib_install/linux/ubuntu-focal/install-prebuilt-packages.sh

@@ -6,26 +6,26 @@ set -e
 # Error on undefined variable
 set -u
 
-apt-get update
-DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
-    g++ \
-    g++-10 \
-    gcc \
-    gcc-10
-
-# Add alternatives for cpp-10, gcc-10, and g++-10
-# NOTE: We use a low priority to avoid affecting the prioritization of any existing alternatives
-# on the user's system.
-update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-10 0 \
-  --slave /usr/share/man/man1/cc.1.gz cc.1.gz /usr/share/man/man1/gcc.1.gz
-update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++-10 0 \
-  --slave /usr/share/man/man1/c++.1.gz c++.1.gz /usr/share/man/man1/g++.1.gz
-update-alternatives --install /lib/cpp cpp /usr/bin/cpp-10 0
-
-update-alternatives --config cc
-
-update-alternatives --set cc /usr/bin/gcc-10
-update-alternatives --set c++ /usr/bin/g++-10
-update-alternatives --set cpp /usr/bin/cpp-10
-
-update-alternatives --config cc
+#apt-get update
+#DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
+#    g++ \
+#    g++-10 \
+#    gcc \
+#    gcc-10
+#
+## Add alternatives for cpp-10, gcc-10, and g++-10
+## NOTE: We use a low priority to avoid affecting the prioritization of any existing alternatives
+## on the user's system.
+#update-alternatives --install /usr/bin/cc cc /usr/bin/gcc-10 0 \
+#  --slave /usr/share/man/man1/cc.1.gz cc.1.gz /usr/share/man/man1/gcc.1.gz
+#update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++-10 0 \
+#  --slave /usr/share/man/man1/c++.1.gz c++.1.gz /usr/share/man/man1/g++.1.gz
+#update-alternatives --install /lib/cpp cpp /usr/bin/cpp-10 0
+#
+#update-alternatives --config cc
+#
+#update-alternatives --set cc /usr/bin/gcc-10
+#update-alternatives --set c++ /usr/bin/g++-10
+#update-alternatives --set cpp /usr/bin/cpp-10
+#
+#update-alternatives --config cc