crypto: deadcode structs from 'comp' removal

Ard's recent series of patches removing 'comp' implementations
left behind a bunch of trivial structs, remove them.

These are:
  crypto842_ctx - commit 2d985ff007 ("crypto: 842 - drop obsolete 'comp'
implementation")
  lz4_ctx       - commit 33335afe33 ("crypto: lz4 - drop obsolete 'comp'
implementation")
  lz4hc_ctx     - commit dbae96559e ("crypto: lz4hc - drop obsolete
'comp' implementation")
  lzo_ctx       - commit a3e43a25ba ("crypto: lzo - drop obsolete
'comp' implementation")
  lzorle_ctx    - commit d32da55c5b ("crypto: lzo-rle - drop obsolete
'comp' implementation")

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/842.c

@@ -23,10 +23,6 @@
 #include <linux/module.h>
 #include <linux/sw842.h>
 
-struct crypto842_ctx {
-	void *wmem;	/* working memory for compress */
-};
-
 static void *crypto842_alloc_ctx(void)
 {
 	void *ctx;

crypto/lz4.c

@@ -12,10 +12,6 @@
 #include <linux/lz4.h>
 #include <crypto/internal/scompress.h>
 
-struct lz4_ctx {
-	void *lz4_comp_mem;
-};
-
 static void *lz4_alloc_ctx(void)
 {
 	void *ctx;

crypto/lz4hc.c

@@ -10,10 +10,6 @@
 #include <linux/vmalloc.h>
 #include <linux/lz4.h>
 
-struct lz4hc_ctx {
-	void *lz4hc_comp_mem;
-};
-
 static void *lz4hc_alloc_ctx(void)
 {
 	void *ctx;

crypto/lzo-rle.c

@@ -9,10 +9,6 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 
-struct lzorle_ctx {
-	void *lzorle_comp_mem;
-};
-
 static void *lzorle_alloc_ctx(void)
 {
 	void *ctx;

crypto/lzo.c

@@ -9,10 +9,6 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 
-struct lzo_ctx {
-	void *lzo_comp_mem;
-};
-
 static void *lzo_alloc_ctx(void)
 {
 	void *ctx;