[mlir] Fix includes in mlir-translate

Drops the include on InitAllDialects.h, as dialects are now initialized in the translation passes.

Differential Revision: https://reviews.llvm.org/D87129

mlir/tools/mlir-translate/mlir-translate.cpp

@@ -11,13 +11,12 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "mlir/InitAllDialects.h"
 #include "mlir/InitAllTranslations.h"
+#include "mlir/Support/LogicalResult.h"
 #include "mlir/Translation.h"
 
 using namespace mlir;
 
-
 namespace mlir {
 // Defined in the test directory, no public header.
 void registerTestRoundtripSPIRV();