Revert commits 720ea42 and a27b03c which broke the Fixture build

These were aimed at preventing the internals header from declaring
  a prototype for 'int UNITY_OUTPUT_CHAR(int);'. The second part fixed
  an omitted declaration in the tests caused by the first commit.
 Will replace the default behavior & add an option for this in next commit

src/unity.c

@@ -7,11 +7,6 @@
 #include "unity.h"
 #include <stddef.h>
 
-#ifndef UNITY_OUTPUT_CHAR_USE_PUTC
-//If defined as something else, make sure we declare it here so it's ready for use
-extern int UNITY_OUTPUT_CHAR(int);
-#endif
-
 #define UNITY_FAIL_AND_BAIL   { Unity.CurrentTestFailed  = 1; longjmp(Unity.AbortFrame, 1); }
 #define UNITY_IGNORE_AND_BAIL { Unity.CurrentTestIgnored = 1; longjmp(Unity.AbortFrame, 1); }
 /// return prematurely if we are already in failure or ignore state

src/unity_internals.h

@@ -291,12 +291,9 @@ typedef UNITY_DOUBLE_TYPE _UD;
 //Default to using putchar, which is defined in stdio.h
 #include <stdio.h>
 #define UNITY_OUTPUT_CHAR(a) putchar(a)
-// We need to flag the output char function uses putc in
+#else
-//  unity.c the extern function is not declared then.
+//If defined as something else, make sure we declare it here so it's ready for use
-// Previously the extern was declared in this header but
+extern int UNITY_OUTPUT_CHAR(int);
-//  when redundant function declaration compiler flag is enabled
-//  it wont compile.
-#define UNITY_OUTPUT_CHAR_USE_PUTC
 #endif
 
 #ifndef UNITY_PRINT_EOL

test/tests/testunity.c

@@ -8,8 +8,6 @@
 #include "unity.h"
 #include <string.h>
 
-int putcharSpy(int c);
-
 // Dividing by these constants produces +/- infinity.
 // The rationale is given in UnityAssertFloatIsInf's body.
 #ifndef UNITY_EXCLUDE_FLOAT