Remove TinyCrypt config condition in source files

This commit removes from the TinyCrypt header and source code files, the
configuration condition on MBEDTLS_USE_TINYCRYPT to include the file
contents.

This is to allow use of the library by the Factory Tool without enabling
MBEDTLS_USE_TINYCRYPT, and also removes a modification we've made to make the
code closer to the upstream TinyCrypt making it easier to maintain.
diff --git a/include/tinycrypt/ecc.h b/include/tinycrypt/ecc.h
index 2da74b3..e4435fd 100644
--- a/include/tinycrypt/ecc.h
+++ b/include/tinycrypt/ecc.h
@@ -73,7 +73,6 @@
  *
  */
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #ifndef __TC_UECC_H__
 #define __TC_UECC_H__
 
@@ -528,4 +527,3 @@
 #endif
 
 #endif /* __TC_UECC_H__ */
-#endif /* MBEDTLS_USE_TINYCRYPT */
diff --git a/include/tinycrypt/ecc_dh.h b/include/tinycrypt/ecc_dh.h
index a2edb01..d87393d 100644
--- a/include/tinycrypt/ecc_dh.h
+++ b/include/tinycrypt/ecc_dh.h
@@ -71,7 +71,6 @@
  *  Security: The curve NIST p-256 provides approximately 128 bits of security.
  */
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #ifndef __TC_ECC_DH_H__
 #define __TC_ECC_DH_H__
 
@@ -135,4 +134,3 @@
 #endif
 
 #endif /* __TC_ECC_DH_H__ */
-#endif /* MBEDTLS_USE_TINYCRYPT */
diff --git a/include/tinycrypt/ecc_dsa.h b/include/tinycrypt/ecc_dsa.h
index e54a77e..896e20e 100644
--- a/include/tinycrypt/ecc_dsa.h
+++ b/include/tinycrypt/ecc_dsa.h
@@ -80,7 +80,6 @@
  *          the signer's public key and the signature values (r and s).
  */
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #ifndef __TC_ECC_DSA_H__
 #define __TC_ECC_DSA_H__
 
@@ -143,4 +142,3 @@
 #endif
 
 #endif /* __TC_ECC_DSA_H__ */
-#endif /* MBEDTLS_USE_TINYCRYPT */
diff --git a/tinycrypt/ecc.c b/tinycrypt/ecc.c
index d01c676..14fa582 100644
--- a/tinycrypt/ecc.c
+++ b/tinycrypt/ecc.c
@@ -63,7 +63,6 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #include <tinycrypt/ecc.h>
 #include "mbedtls/platform_util.h"
 #include <string.h>
@@ -1114,7 +1113,4 @@
 	curve->num_bytes, curve->num_bytes, _public + curve->num_words);
 	return 1;
 }
-#else
-typedef int mbedtls_dummy_tinycrypt_def;
-#endif /* MBEDTLS_USE_TINYCRYPT */
 
diff --git a/tinycrypt/ecc_dh.c b/tinycrypt/ecc_dh.c
index f9c0a5e..3ab7b15 100644
--- a/tinycrypt/ecc_dh.c
+++ b/tinycrypt/ecc_dh.c
@@ -66,7 +66,6 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #include <tinycrypt/ecc.h>
 #include <tinycrypt/ecc_dh.h>
 #include <string.h>
@@ -188,6 +187,3 @@
 
 	return r;
 }
-#else
-typedef int mbedtls_dummy_tinycrypt_def;
-#endif /* MBEDTLS_USE_TINYCRYPT */
diff --git a/tinycrypt/ecc_dsa.c b/tinycrypt/ecc_dsa.c
index 04b1bfa..b44fa37 100644
--- a/tinycrypt/ecc_dsa.c
+++ b/tinycrypt/ecc_dsa.c
@@ -64,7 +64,6 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
-#if defined(MBEDTLS_USE_TINYCRYPT)
 #include <tinycrypt/ecc.h>
 #include <tinycrypt/ecc_dsa.h>
 
@@ -303,6 +302,3 @@
 	/* Accept only if v == r. */
 	return (int)(uECC_vli_equal(rx, r) == 0);
 }
-#else
-typedef int mbedtls_dummy_tinycrypt_def;
-#endif /* MBEDTLS_USE_TINYCRYPT */