cleanup: remove unneeded includes in C files.

Before:
 Ten builds, laptop -j5, no ccache:

```
real	0m36.686000-38.956000(38.608+/-0.65)s
user	2m32.864000-42.253000(40.7545+/-2.7)s
sys	0m16.618000-18.316000(17.8531+/-0.48)s
```

 Ten builds, laptop -j5, ccache (warm):

```
real	0m8.212000-8.577000(8.39989+/-0.13)s
user	0m12.731000-13.212000(12.9751+/-0.17)s
sys	0m3.697000-3.902000(3.83722+/-0.064)s
```

After:
 Ten builds, laptop -j5, no ccache: 8% faster

```
real	0m33.802000-35.773000(35.468+/-0.54)s
user	2m19.073000-27.754000(26.2542+/-2.3)s
sys	0m15.784000-17.173000(16.7165+/-0.37)s
```

 Ten builds, laptop -j5, ccache (warm): 1% faster

```
real	0m8.200000-8.485000(8.30138+/-0.097)s
user	0m12.485000-13.100000(12.7344+/-0.19)s
sys	0m3.702000-3.889000(3.78787+/-0.056)s
```

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

wire/test/run-peer-wire.c

@@ -6,17 +6,11 @@
 #include "common/channel_id.c"
 #include "common/node_id.c"
 
-#include <assert.h>
 #include <stdio.h>
 
-#include <ccan/str/hex/hex.h>
-#include <common/amount.h>
-#include <common/bigsize.h>
 #include <common/channel_type.h>
-#include <bitcoin/chainparams.h>
 #include <common/setup.h>
 #include <common/sphinx.h>
-#include <wire/peer_wire.h>
 #include <wire/tlvstream.c>
 
 extern secp256k1_context *secp256k1_ctx;

wire/test/run-tlvstream.c

@@ -1,9 +1,4 @@
-#include <ccan/array_size/array_size.h>
-#include <ccan/str/hex/hex.h>
-#include <common/channel_type.h>
 #include <common/utils.h>
-#include <stdio.h>
-#include <wally_core.h>
 
 static const char *reason;
 #undef SUPERVERBOSE
@@ -12,6 +7,7 @@ static const char *reason;
 #include <bitcoin/pubkey.c>
 #include <common/amount.c>
 #include <common/bigsize.c>
+#include <common/channel_type.h>
 #include <common/node_id.c>
 #include <common/setup.h>