compiler-team.md: remove obsolete membership level
There used to be compiler team and compiler-contributor team, and those have since been collapsed into 1 team.
diff --git a/src/compiler-team.md b/src/compiler-team.md
index 896d9e6..8c0481f 100644
--- a/src/compiler-team.md
+++ b/src/compiler-team.md
@@ -134,12 +134,3 @@
review burden for all of us! However, if you don't have time to give
people timely feedback on their PRs, it may be better that you don't
get on the list.
-
-### Full team membership
-
-Full team membership is typically extended once someone made many
-contributions to the Rust compiler over time, ideally (but not
-necessarily) to multiple areas. Sometimes this might be implementing a
-new feature, but it is also important — perhaps more important! — to
-have time and willingness to help out with general upkeep such as
-bugfixes, tracking regressions, and other less glamorous work.
