Removed unused struct ssl3_comp_st

Fixes #21731

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21803)

ssl/ssl_local.h

@@ -2163,16 +2163,6 @@ typedef struct ssl3_enc_method {
  */
 # define SSL_ENC_FLAG_TLS1_2_CIPHERS     0x10
 
-# ifndef OPENSSL_NO_COMP
-/* Used for holding the relevant compression methods loaded into SSL_CTX */
-typedef struct ssl3_comp_st {
-    int comp_id;                /* The identifier byte for this compression
-                                 * type */
-    char *name;                 /* Text name used for the compression type */
-    COMP_METHOD *method;        /* The method :-) */
-} SSL3_COMP;
-# endif
-
 typedef enum downgrade_en {
     DOWNGRADE_NONE,
     DOWNGRADE_TO_1_2,

util/indent.pro

@@ -382,7 +382,6 @@
 -T SRTP_PROTECTION_PROFILE
 -T SSL
 -T TLS_BUFFER
--T SSL3_COMP
 -T SSL3_ENC_METHOD
 -T TLS_RL_RECORD
 -T SSL3_STATE