CLEANUP: pool/tree-wide: remove suffix "_pool" from certain pool names

A curious practise seems to have started long ago and contaminated various
code areas, consisting in appending "_pool" at the end of the name of a
given pool. That makes no sense as the name is only used to name the pool
in diags such as "show pools", and since names are truncated there, this
adds some confusion when analysing the dump outputs. Let's just clean all
of them at once. there were essentially in SSL and QUIC.
diff --git a/src/xprt_handshake.c b/src/xprt_handshake.c
index 7b2265f..33f7750 100644
--- a/src/xprt_handshake.c
+++ b/src/xprt_handshake.c
@@ -20,7 +20,7 @@
 	void *xprt_ctx;
 };
 
-DECLARE_STATIC_POOL(xprt_handshake_ctx_pool, "xprt_handshake_ctx_pool", sizeof(struct xprt_handshake_ctx));
+DECLARE_STATIC_POOL(xprt_handshake_ctx_pool, "xprt_handshake_ctx", sizeof(struct xprt_handshake_ctx));
 
 /* This XPRT doesn't take care of sending or receiving data, once its handshake
  * is done, it just removes itself