Remove the gdb workaround

rust.spec

@@ -421,13 +421,6 @@ sed -i.ffi -e '$a #[link(name = "ffi")] extern {}' \
 find src/vendor -name .cargo-checksum.json \
   -exec sed -i.uncheck -e 's/"files":{[^}]*}/"files":{ }/' '{}' '+'
 
-%if 0%{?fedora} >= 29
-  # gdb-8.1.50 snapshots are hanging our debuginfo-gdb tests on 32-bit platforms,
-  # so just skip these tests for now...
-  sed -i.gdb-hang -e '/Skip debuginfo/a if mode == "debuginfo-gdb" { return; }' \
-    src/bootstrap/test.rs
-%endif
-
 
 %build