Revert "Implement on-chain puzzle submission and retry mechanism"

backend/src/blockchain/blockchain.module.ts

@@ -1,14 +1,10 @@
 import { Module } from '@nestjs/common';
-import { ConfigModule } from '@nestjs/config';
 import { BlockchainController } from './controller/blockchain.controller';
 import { BlockchainService } from './provider/blockchain.service';
-import { SubmitPuzzleProvider } from './providers/submit-puzzle.provider';
 import { GetPlayerProvider } from './providers/get-player.provider';
 
 @Module({
-  imports: [ConfigModule],
   controllers: [BlockchainController],
-  providers: [BlockchainService, SubmitPuzzleProvider],
   providers: [BlockchainService, GetPlayerProvider],
   exports: [BlockchainService],
 })

backend/src/blockchain/provider/blockchain.service.ts

@@ -1,23 +1,9 @@
 import { Injectable } from '@nestjs/common';
-import { SubmitPuzzleProvider } from '../providers/submit-puzzle.provider';
+import { GetPlayerProvider } from '../providers/get-player.provider';
 
 @Injectable()
 export class BlockchainService {
-  constructor(private readonly submitPuzzleProvider: SubmitPuzzleProvider) {}
-
-  async submitPuzzleOnChain(
-    stellarWallet: string,
-    puzzleId: string,
-    category: string,
-    score: number,
-  ): Promise<void> {
-    return this.submitPuzzleProvider.submitPuzzleOnChain(
-      stellarWallet,
-      puzzleId,
-      category,
-      score,
-    );
-  }
+  constructor(private readonly getPlayerProvider: GetPlayerProvider) {}
 
   getHello(): string {
     return 'Hello from Blockchain Service';

backend/src/progress/progress.module.ts

@@ -10,14 +10,12 @@ import { GetProgressHistoryProvider } from './providers/get-progress-history.pro
 import { GetCategoryStatsProvider } from './providers/get-category-stats.provider';
 import { GetOverallStatsProvider } from './providers/get-overall-stats.provider';
 import { ProgressCalculationProvider } from './providers/progress-calculation.provider';
-import { BlockchainModule } from '../blockchain/blockchain.module';
 import { Puzzle } from '../puzzles/entities/puzzle.entity';
 import { XpLevelService } from '../users/providers/xp-level.service';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([UserProgress, User, Puzzle, Streak, DailyQuest]),
-    BlockchainModule,
   ],
   controllers: [ProgressController],
   providers: [